Turek-Hron FSI2 Benchmark Example#

This example is a version of the Turek-Hron FSI2 case that is often used as a benchmark case for System Coupling. This two-way, fluid-structure interaction (FSI) case is based on co-simulation of a transient oscillating beam with surface data transfers.

  • Ansys Mechanical APDL (MAPDL) is used to perform a transient structural analysis.

  • Ansys Fluent is used to perform a transient fluid-flow analysis.

  • System Coupling coordinates the coupled solution involving the above products to solve the multiphysics problem via co-simulation.

Problem description

An elastic beam structure is attached to a rigid cylinder. The system resides within a fluid filled channel:

../../_images/turek_hron_case.png

The flow is laminar with a Reynolds number of \(Re = 100\). The inlet velocity has a parabolic profile with a maximum value of \(1.5 \cdot \bar{U}\), where \(\bar{U}\) is the average inlet velocity. The cylinder sits at an offset of \(0.05~m\) to the incoming flow, causing an imbalance of surface forces on the elastic beam. The beam and the surrounding fluid are simulated for a few time setps to allow an examination of the motion of the beam as it starts vibrating due to vortices shedded by the rigid cylinder.

Import modules, download files, launch products#

Setting up this example consists of performing imports, downloading the input file, and launching the required products.

Perform required imports#

Import ansys-systemcoupling-core, ansys-fluent-core and ansys-mapdl-core and other required packages.

import ansys.fluent.core as pyfluent
import ansys.mapdl.core as pymapdl
import matplotlib.pyplot as plt

import ansys.systemcoupling.core as pysyc
from ansys.systemcoupling.core import examples

Download the input file#

This example uses one pre-created file - a Fluent mesh file that contains the fluids mesh and named zones.

fluent_msh_file = examples.download_file(
    "turek_hron_fluid.msh", "pysystem-coupling/turek-horn-benchmark"
)

mapdl_cdb_file = examples.download_file(
    "turek_hron_solid_model.cdb", "pysystem-coupling/turek-horn-benchmark"
)

Launch products#

Launch instances of the Mechanical APDL, Fluent, and System Coupling and return client (session) objects that allow you to interact with these products via APIs exposed into the current Python environment.

mapdl = pymapdl.launch_mapdl()
fluent = pyfluent.launch_fluent()

syc = pysyc.launch(start_output=True)

Setup Mechanical APDL, Fluent, and System Coupling analyses#

The setup consists of setting up the structural analysis, the fluids analysis, and the coupled analysis.

Define constants#

CYLINDER_DIA = 0.1  # Diameter of the cylinder
RE = 100  # Reynolds number
U_BAR = 1  # Average velocity
FLUID_DENS = 1000  # Fluid density
SOLID_DENS = 10000  # Solid density
NU = 0.4  # Poisson's ratio
G = 500000  # Shear modulus
E = 2 * G * (1 + NU)  # Youngs modulus

Clear cache#

mapdl.clear()

Enter Mechancal APDL setup#

mapdl.prep7()
*** MAPDL - ENGINEERING ANALYSIS SYSTEM  RELEASE                  24.2     ***
 Ansys Mechanical Enterprise
 00000000  VERSION=LINUX x64     17:32:07  NOV 20, 2024 CP=      1.490





          ***** MAPDL ANALYSIS DEFINITION (PREP7) *****

Read the CDB file#

mapdl.cdread(option="DB", fname=mapdl_cdb_file)

Define material properties.#

mapdl.mp("DENS", 1, SOLID_DENS)  # density
mapdl.mp("EX", 1, E)  # Young's modulus
mapdl.mp("NUXY", 1, NU)  # Poisson's ratio
mapdl.mp("GXY", 1, G)  # Shear modulus
MATERIAL          1     GXY  =   500000.0

Mechanical solver setup#

mapdl.slashsolu()
mapdl.antype(4)
mapdl.nlgeom("on")
mapdl.kbc(1)

mapdl.eqslv("sparse")
mapdl.run("rstsuppress,none")  # don't suppress anything due to presence of FSI loading
mapdl.dmpoption("emat", "no")
mapdl.dmpoption("esav", "no")

mapdl.cmwrite()  # Export components due to presence of FSI loading
mapdl.trnopt(tintopt="hht")
mapdl.tintp("mosp")  # No such option in docs
mapdl.nldiag("cont", "iter")
mapdl.scopt("NO")

mapdl.autots("on")  # User turned on automatic time stepping
mapdl.nsubst(1, 1, 1, "OFF")
mapdl.time(20.0)  # Max time set to any high value; will be controlled by syc
mapdl.timint("on")

mapdl.outres("all", "all")
WRITE ALL  ITEMS TO THE DATABASE WITH A FREQUENCY OF ALL
   FOR ALL APPLICABLE ENTITIES

Set up the fluid analysis#

Read the pre-created mesh file

fluent.file.read_mesh(file_name=fluent_msh_file)
fluent.mesh.check()
Reading "turek_hron_fluid.msh"...

Buffering for file scan...

   13932 nodes, binary.
   13218 quadrilateral interior faces, zone  1, binary.
      36 quadrilateral velocity-inlet faces, zone  5, binary.
      60 quadrilateral pressure-outlet faces, zone  6, binary.
     196 quadrilateral wall faces, zone  7, binary.
     100 quadrilateral wall faces, zone  8, binary.
      84 quadrilateral wall faces, zone  9, binary.
    6728 quadrilateral symmetry faces, zone 10, binary.
    6728 quadrilateral symmetry faces, zone 11, binary.
    6728 hexahedral cells, zone  2, binary.

Building...
     mesh
     materials,
     interface,
     domains,
     zones,
        symmetry_top
        symmetry_bot
        fsi
        cylinder
        wall
        outlet
        inlet
        d8b0bb73-1d68-4795-9b6f-6b2467eb5a7b_fluid
        interior-d8b0bb73-1d68-4795-9b6f-6b2467eb5a7b_fluid
     parallel,
Done.

 Domain Extents:
   x-coordinate: min (m) = -2.000000e-01, max (m) = 2.300000e+00
   y-coordinate: min (m) = -2.000000e-01, max (m) = 2.100000e-01
   z-coordinate: min (m) = 0.000000e+00, max (m) = 1.000000e-02
 Volume statistics:
   minimum volume (m3): 3.748429e-08
   maximum volume (m3): 1.290568e-05
     total volume (m3): 1.009166e-02
 Face area statistics:
   minimum face area (m2): 3.748429e-06
   maximum face area (m2): 1.290568e-03
 Checking mesh............................
Done.

Define fluids general solver settings#

fluent.setup.general.solver.type = "pressure-based"
fluent.solution.methods.high_order_term_relaxation.enable = True

Define the fluid and update the material properties#

viscosity = (FLUID_DENS * U_BAR * CYLINDER_DIA) / RE

fluent.setup.models.viscous.model = "laminar"
fluent.setup.materials.fluid["water"] = {
    "density": {"option": "constant", "value": FLUID_DENS},
    "viscosity": {"option": "constant", "value": viscosity},
}

fluent.setup.cell_zone_conditions.fluid["*fluid*"].general.material = "water"
fluent.setup.materials.print_state()
database :
  database_type : fluent-database
fluid :
  air :
    name : air
    chemical_formula :
    density :
      option : constant
      value : 1.225
    viscosity :
      option : constant
      value : 1.7894e-05
  water :
    name : water
    chemical_formula :
    density :
      option : constant
      value : 1000
    viscosity :
      option : constant
      value : 1.0
solid :
  aluminum :
    name : aluminum
    chemical_formula : al
    density :
      option : constant
      value : 2719

Create the parabolic inlet profile as a named expression#

fluent.setup.named_expressions["u_bar"] = {  # average velocity
    "definition": f"{U_BAR} [m/s]"
}
fluent.setup.named_expressions["t_bar"] = {"definition": "1.0 [s]"}
fluent.setup.named_expressions["y_bar"] = {"definition": "1.0 [m]"}
fluent.setup.named_expressions["u_y"] = {
    "definition": f"(6 * u_bar / ( ( 4.1 * {CYLINDER_DIA} ) ** 2 )) \
* ( y/y_bar + 0.2 ) * ( 0.21 - y/y_bar )"
}

Update the inlet field#

inlet_fluid = fluent.setup.boundary_conditions.velocity_inlet["inlet"]
inlet_fluid.momentum.initial_gauge_pressure.value = 0
inlet_fluid.momentum.velocity.value = "u_y"
fluent.setup.named_expressions.print_state()
t_bar :
  name : t_bar
  definition : 1.0 [s]
  description :
  parameterid :
  parametername :
  unit :
  input_parameter : False
  output_parameter : False
u_bar :
  name : u_bar
  definition : 1 [m/s]
  description :
  parameterid :
  parametername :
  unit :
  input_parameter : False
  output_parameter : False
u_y :
  name : u_y
  definition : (6 * u_bar / ( ( 4.1 * 0.1 ) ** 2 )) * ( y/y_bar + 0.2 ) * ( 0.21 - y/y_bar )
  description :
  parameterid :
  parametername :
  unit :
  input_parameter : False
  output_parameter : False
y_bar :
  name : y_bar
  definition : 1.0 [m]
  description :
  parameterid :
  parametername :
  unit :
  input_parameter : False
  output_parameter : False

Setup any relevant solution controls#

fluent.solution.methods.discretization_scheme = {
    "mom": "second-order-upwind",
    "pressure": "second-order",
}

Initialize the flow field & run a steady simulation#

First, a steady simulation is conducted to initialize the flow field with the parabolic inlet flow.

fluent.solution.initialization.hybrid_initialize()
fluent.solution.run_calculation.iterate(iter_count=500)
Initialize using the hybrid initialization method.

Checking case topology...
-This case has both inlets & outlets
-Pressure information is not available at the boundaries.
 Case will be initialized with constant pressure

        iter            scalar-0

        1               1.000000e+00
        2               1.213050e-05
        3               2.572431e-06
        4               1.282160e-06
        5               4.130318e-07
        6               1.825524e-07
        7               6.718438e-08
        8               2.651539e-08
        9               1.019930e-08
        10              4.000471e-09

Hybrid initialization is done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
     1  1.0000e+00  1.2988e-02  5.4052e-03  0.0000e+00  0:00:23  499
     2  6.0422e-01  9.2900e-03  3.0441e-03  0.0000e+00  0:00:24  498
     3  4.6533e-01  7.3624e-03  1.8828e-03  0.0000e+00  0:00:24  497
     4  3.7461e-01  6.1863e-03  1.2895e-03  0.0000e+00  0:00:24  496
     5  3.1013e-01  5.3575e-03  9.6644e-04  0.0000e+00  0:00:23  495
     6  2.7349e-01  4.6957e-03  7.5868e-04  6.8550e-14  0:00:23  494
     7  2.6472e-01  4.1352e-03  6.2159e-04  3.9989e-14  0:00:23  493
     8  2.4880e-01  3.6612e-03  5.2709e-04  2.5735e-14  0:00:23  492
     9  2.2863e-01  3.2835e-03  4.5395e-04  1.8040e-14  0:00:23  491
    10  2.0993e-01  2.9670e-03  3.9798e-04  1.4244e-14  0:00:23  490
    11  1.9688e-01  2.6976e-03  3.5848e-04  1.1597e-14  0:00:22  489

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    12  1.8175e-01  2.4688e-03  3.2553e-04  9.7888e-15  0:00:22  488
    13  1.6791e-01  2.2698e-03  2.9865e-04  8.6386e-15  0:00:22  487
    14  1.5669e-01  2.1003e-03  2.7747e-04  7.5366e-15  0:00:23  486
    15  1.4811e-01  1.9591e-03  2.5991e-04  6.9611e-15  0:00:22  485
    16  1.3957e-01  1.8384e-03  2.4618e-04  6.6191e-15  0:00:22  484
    17  1.3280e-01  1.7359e-03  2.3505e-04  6.5294e-15  0:00:22  483
    18  1.2520e-01  1.6469e-03  2.2550e-04  6.0518e-15  0:00:22  482
    19  1.2116e-01  1.5643e-03  2.1738e-04  5.2223e-15  0:00:22  481
    20  1.1603e-01  1.4905e-03  2.0910e-04  4.3215e-15  0:00:22  480
    21  1.1417e-01  1.4232e-03  2.0288e-04  3.4610e-15  0:00:22  479
    22  1.1095e-01  1.3627e-03  1.9792e-04  2.7499e-15  0:00:22  478

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    23  1.0499e-01  1.3055e-03  1.9180e-04  2.4630e-15  0:00:22  477
    24  9.9785e-02  1.2505e-03  1.8552e-04  2.2110e-15  0:00:22  476
    25  9.6403e-02  1.1982e-03  1.8127e-04  1.6772e-15  0:00:22  475
    26  9.1879e-02  1.1469e-03  1.7664e-04  1.2652e-15  0:00:22  474
    27  8.7518e-02  1.1000e-03  1.7114e-04  1.2256e-15  0:00:22  473
    28  8.5723e-02  1.0550e-03  1.6596e-04  1.2129e-15  0:00:21  472
    29  8.3369e-02  1.0111e-03  1.6193e-04  9.8516e-16  0:00:30  471
    30  7.9603e-02  9.7007e-04  1.5688e-04  8.1901e-16  0:00:28  470
    31  7.5947e-02  9.3081e-04  1.5170e-04  7.5297e-16  0:00:26  469
    32  7.1970e-02  8.9229e-04  1.4721e-04  7.1759e-16  0:00:56  468
    33  6.7985e-02  8.5609e-04  1.4275e-04  6.8166e-16  0:00:49  467

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    34  6.4003e-02  8.2155e-04  1.3704e-04  6.6138e-16  0:00:43  466
    35  6.0994e-02  7.8842e-04  1.3197e-04  5.9408e-16  0:00:38  465
    36  5.7711e-02  7.5643e-04  1.2724e-04  5.1519e-16  0:00:35  464
    37  5.5130e-02  7.2551e-04  1.2289e-04  4.3624e-16  0:00:32  463
    38  5.1997e-02  6.9534e-04  1.1839e-04  3.6017e-16  0:00:29  462
    39  4.7873e-02  6.6618e-04  1.1301e-04  2.9290e-16  0:00:27  461
    40  4.4954e-02  6.3833e-04  1.0829e-04  2.4966e-16  0:00:26  460
    41  4.2367e-02  6.1138e-04  1.0362e-04  2.0739e-16  0:00:24  459
    42  3.9912e-02  5.8557e-04  9.8739e-05  1.6815e-16  0:00:24  458
    43  3.7625e-02  5.6107e-04  9.3923e-05  1.5285e-16  0:00:23  457
    44  3.5052e-02  5.3745e-04  8.9587e-05  1.4216e-16  0:00:23  456

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    45  3.2460e-02  5.1463e-04  8.5139e-05  1.2985e-16  0:00:22  455
    46  3.0356e-02  4.9301e-04  8.0768e-05  1.2434e-16  0:00:22  454
    47  2.8422e-02  4.7221e-04  7.6797e-05  1.2014e-16  0:00:22  453
    48  2.6773e-02  4.5243e-04  7.2965e-05  1.1196e-16  0:00:22  452
    49  2.5304e-02  4.3376e-04  6.9326e-05  1.0090e-16  0:00:21  451
    50  2.4067e-02  4.1610e-04  6.5745e-05  8.7713e-17  0:00:21  450
    51  2.2653e-02  3.9914e-04  6.2516e-05  7.3759e-17  0:00:21  449
    52  2.1299e-02  3.8305e-04  5.9328e-05  6.0714e-17  0:00:21  448
    53  2.0085e-02  3.6774e-04  5.6452e-05  5.2110e-17  0:00:21  447
    54  1.8929e-02  3.5320e-04  5.3861e-05  4.8589e-17  0:00:21  446
    55  1.7787e-02  3.3943e-04  5.1415e-05  4.7539e-17  0:00:20  445

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    56  1.6691e-02  3.2636e-04  4.9004e-05  4.5934e-17  0:00:20  444
    57  1.5670e-02  3.1389e-04  4.6870e-05  4.4163e-17  0:00:20  443
    58  1.4790e-02  3.0214e-04  4.4692e-05  4.2252e-17  0:00:20  442
    59  1.3872e-02  2.9089e-04  4.2674e-05  3.9374e-17  0:00:19  441
    60  1.3103e-02  2.8015e-04  4.0804e-05  3.6262e-17  0:00:19  440
    61  1.2101e-02  2.6986e-04  3.9199e-05  3.2635e-17  0:00:19  439
    62  1.1389e-02  2.6028e-04  3.7633e-05  2.9172e-17  0:00:20  438
    63  1.0649e-02  2.5119e-04  3.6171e-05  2.6318e-17  0:00:20  437
    64  1.0136e-02  2.4256e-04  3.4865e-05  2.3399e-17  0:00:20  436
    65  9.7014e-03  2.3436e-04  3.3554e-05  2.0301e-17  0:00:21  435
    66  9.3621e-03  2.2654e-04  3.2344e-05  1.7432e-17  0:00:21  434

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    67  8.9332e-03  2.1913e-04  3.1124e-05  1.5878e-17  0:00:21  433
    68  8.7320e-03  2.1220e-04  2.9963e-05  1.5523e-17  0:00:20  432
    69  8.4962e-03  2.0547e-04  2.8936e-05  1.4920e-17  0:00:20  431
    70  8.2318e-03  1.9906e-04  2.7896e-05  1.4236e-17  0:00:20  430
    71  7.9459e-03  1.9296e-04  2.6956e-05  1.3569e-17  0:00:20  429
    72  7.6883e-03  1.8715e-04  2.6011e-05  1.2874e-17  0:00:20  428
    73  7.3386e-03  1.8163e-04  2.5161e-05  1.2180e-17  0:00:20  427
    74  7.0831e-03  1.7639e-04  2.4318e-05  1.1387e-17  0:00:20  426
    75  6.8238e-03  1.7138e-04  2.3474e-05  1.0446e-17  0:00:20  425
    76  6.6377e-03  1.6664e-04  2.2715e-05  9.5202e-18  0:00:20  424
    77  6.4309e-03  1.6212e-04  2.1949e-05  8.6096e-18  0:00:20  423

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    78  6.2116e-03  1.5783e-04  2.1209e-05  7.7720e-18  0:00:20  422
    79  5.9921e-03  1.5372e-04  2.0516e-05  7.1087e-18  0:00:20  421
    80  5.7797e-03  1.4974e-04  1.9798e-05  6.6990e-18  0:00:20  420
    81  5.5621e-03  1.4589e-04  1.9161e-05  6.4146e-18  0:00:20  419
    82  5.4070e-03  1.4221e-04  1.8527e-05  6.0928e-18  0:00:20  418
    83  5.2226e-03  1.3861e-04  1.7895e-05  5.7269e-18  0:00:20  417
    84  5.0626e-03  1.3512e-04  1.7327e-05  5.4528e-18  0:00:19  416
    85  4.9197e-03  1.3167e-04  1.6716e-05  5.1340e-18  0:00:19  415
    86  4.8011e-03  1.2834e-04  1.6162e-05  4.8662e-18  0:00:19  414
    87  4.6879e-03  1.2504e-04  1.5608e-05  4.5552e-18  0:00:20  413
    88  4.6217e-03  1.2182e-04  1.5064e-05  4.2674e-18  0:00:19  412

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    89  4.5177e-03  1.1862e-04  1.4555e-05  4.0339e-18  0:00:19  411
    90  4.3746e-03  1.1548e-04  1.4045e-05  3.7697e-18  0:00:19  410
    91  4.2680e-03  1.1240e-04  1.3567e-05  3.5219e-18  0:00:19  409
    92  4.1332e-03  1.0933e-04  1.3088e-05  3.3104e-18  0:00:20  408
    93  4.0106e-03  1.0629e-04  1.2632e-05  3.2128e-18  0:00:20  407
    94  3.8901e-03  1.0332e-04  1.2184e-05  3.0416e-18  0:00:19  406
    95  3.7946e-03  1.0036e-04  1.1740e-05  2.9067e-18  0:00:19  405
    96  3.6299e-03  9.7405e-05  1.1332e-05  2.9273e-18  0:00:19  404
    97  3.5088e-03  9.4469e-05  1.0915e-05  2.7864e-18  0:00:19  403
    98  3.4069e-03  9.1589e-05  1.0519e-05  2.6590e-18  0:00:19  402
    99  3.3017e-03  8.8718e-05  1.0137e-05  2.5889e-18  0:00:19  401

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   100  3.2234e-03  8.5874e-05  9.7524e-06  2.5039e-18  0:00:19  400
   101  3.1318e-03  8.3059e-05  9.3978e-06  2.4294e-18  0:00:19  399
   102  3.0388e-03  8.0270e-05  9.0454e-06  2.2807e-18  0:00:19  398
   103  2.9645e-03  7.7498e-05  8.7086e-06  2.1629e-18  0:00:18  397
   104  2.8871e-03  7.4772e-05  8.3906e-06  2.1431e-18  0:00:18  396
   105  2.7557e-03  7.2058e-05  8.0724e-06  2.0565e-18  0:00:18  395
   106  2.7106e-03  6.9384e-05  7.7753e-06  2.0258e-18  0:00:18  394
   107  2.5775e-03  6.6744e-05  7.4853e-06  1.9239e-18  0:00:17  393
   108  2.5162e-03  6.4114e-05  7.2042e-06  1.8495e-18  0:00:17  392
   109  2.3944e-03  6.1554e-05  6.9437e-06  1.7764e-18  0:00:17  391
   110  2.3326e-03  5.8997e-05  6.6953e-06  1.7524e-18  0:00:17  390

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   111  2.2450e-03  5.6505e-05  6.4518e-06  1.7314e-18  0:00:17  389
   112  2.1744e-03  5.4041e-05  6.2257e-06  1.6777e-18  0:00:17  388
   113  2.0907e-03  5.1618e-05  6.0124e-06  1.6380e-18  0:00:17  387
   114  2.0469e-03  4.9259e-05  5.7993e-06  1.5357e-18  0:00:17  386
   115  1.9372e-03  4.6928e-05  5.6059e-06  1.6163e-18  0:00:16  385
   116  1.8911e-03  4.4667e-05  5.4178e-06  1.5830e-18  0:00:16  384
   117  1.7974e-03  4.2448e-05  5.2287e-06  1.5211e-18  0:00:16  383
   118  1.7491e-03  4.0285e-05  5.0466e-06  1.5344e-18  0:00:16  382
   119  1.7080e-03  3.8189e-05  4.8812e-06  1.5602e-18  0:00:16  381
   120  1.6350e-03  3.6137e-05  4.7189e-06  1.5397e-18  0:00:16  380
   121  1.5985e-03  3.4159e-05  4.5624e-06  1.4721e-18  0:00:16  379

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   122  1.5597e-03  3.2238e-05  4.4162e-06  1.4710e-18  0:00:16  378
   123  1.5048e-03  3.0386e-05  4.2735e-06  1.4020e-18  0:00:16  377
   124  1.4703e-03  2.8600e-05  4.1350e-06  1.4129e-18  0:00:17  376
   125  1.4261e-03  2.6873e-05  4.0005e-06  1.3829e-18  0:00:17  375
   126  1.3661e-03  2.5230e-05  3.8620e-06  1.3825e-18  0:00:17  374
   127  1.3241e-03  2.3648e-05  3.7216e-06  1.4373e-18  0:00:17  373
   128  1.2704e-03  2.2131e-05  3.5806e-06  1.3735e-18  0:00:17  372
   129  1.2094e-03  2.0697e-05  3.4406e-06  1.2980e-18  0:00:17  371
   130  1.1573e-03  1.9326e-05  3.3062e-06  1.3048e-18  0:00:17  370
   131  1.0769e-03  1.8023e-05  3.1763e-06  1.3072e-18  0:00:17  369
   132  1.0543e-03  1.6800e-05  3.0454e-06  1.3447e-18  0:00:17  368

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   133  1.0377e-03  1.5639e-05  2.9168e-06  1.2842e-18  0:00:17  367
   134  9.9983e-04  1.4547e-05  2.7861e-06  1.3548e-18  0:00:17  366
!  134 solution is converged

Switch to transient mode and prepare for coupling#

fluent.setup.general.solver.time = "unsteady-1st-order"
Pressure-Velocity Coupling scheme is set to SIMPLE

Define dynamic meshing#

Define dynamic meshing for deforming symmetry planes. Currently, dynamic_mesh is not exposed to the fluent root session directly. We need to use the tui framework to create dynamic zones.

fluent.tui.define.dynamic_mesh.dynamic_mesh("yes", "no", "no", "no", "no")
fluent.tui.define.dynamic_mesh.zones.create("fsi", "system-coupling")
fluent.tui.define.dynamic_mesh.zones.create(
    "symmetry_bot",
    "deforming",
    "plane",
    "0.",
    "0.",
    "0.00",
    "0",
    "0",
    "1",
    "no",
    "yes",
    "yes",
    "yes",
    "no",
    "yes",
    "no",
    "yes",
)
fluent.tui.define.dynamic_mesh.zones.create(
    "symmetry_top",
    "deforming",
    "plane",
    "0.",
    "0.",
    "0.01",
    "0",
    "0",
    "1",
    "no",
    "yes",
    "yes",
    "yes",
    "no",
    "yes",
    "no",
    "yes",
)

Results and output controls#

Define number of sub-steps fluent iterates for each coupling step. Maximum integration time and total steps are controlled by system coupling.

fluent.solution.run_calculation.transient_controls.max_iter_per_time_step = 20


fluent.file.auto_save.save_data_file_every.frequency_type = "time-step"
fluent.file.auto_save.data_frequency = 10
fluent.file.auto_save.root_name = "turek_hron_fluid_resolved"

Set up the coupled analysis#

System Coupling setup involves adding the structural and fluid participants, adding coupled interfaces and data transfers, and setting other coupled analysis properties.

Add participants#

Add participants by passing session handles to System Coupling.

fluid = syc.setup.add_participant(participant_session=fluent)
solid = syc.setup.add_participant(participant_session=mapdl)
Writing System Coupling file...done.
Writing System Coupling file...done.
Writing System Coupling file...done.
Writing System Coupling file...done.

Setup the interface and data transfers#

Add a coupling interface and data transfers.

interface_name = syc.setup.add_interface(
    side_one_participant=fluid,
    side_one_regions=["fsi"],
    side_two_participant=solid,
    side_two_regions=["FSIN_1"],
)


# set up 2-way FSI coupling - add force & displacement data transfers
data_transfer = syc.setup.add_fsi_data_transfers(interface=interface_name)
force_transfer = syc.setup.coupling_interface[interface_name].data_transfer["FORC"]
force_transfer.relaxation_factor = 0.5

Time step size, end time, output controls

syc.setup.solution_control.time_step_size = "0.01 [s]"  # time step is 0.01 [s]

# To generate similar results shown in this example documentation, increase an end_time
# parameter to 15 [s].
syc.setup.solution_control.end_time = "0.1 [s]"  # end time

syc.setup.output_control.option = "StepInterval"
syc.setup.output_control.output_frequency = 250
# print(syc.setup.get_setup_summary())

Solve the coupled system#

syc.solution.solve()
+=============================================================================+
|                          Coupling Participants (2)                          |
+=============================================================================+
|    FLUENT-1                                                                 |
+-----------------------------------------------------------------------------+
|       Internal Name :                                              FLUENT-1 |
|       Participant Type :                                             FLUENT |
|       Participant Display Name :                                   FLUENT-1 |
|       Dimension :                                                        3D |
|       Input Parameters :                                                 [] |
|       Output Parameters :                                                [] |
|       Participant Analysis Type :                                 Transient |
|       Use New APIs :                                                   True |
|       Restarts Supported :                                             True |
|       Variables (3)                                                         |
|          Variable : Lorentz_Force                                           |
|             Internal Name :                                   lorentz-force |
|             Quantity Type :                                           Force |
|             Participant Display Name :                        Lorentz Force |
|             Data Type :                                                Real |
|             Tensor Type :                                            Vector |
|             Is Extensive :                                             True |
|                                                                             |
|          Variable : displacement                                            |
|             Internal Name :                                    displacement |
|             Quantity Type :                        Incremental Displacement |
|             Participant Display Name :                         displacement |
|             Data Type :                                                Real |
|             Tensor Type :                                            Vector |
|             Is Extensive :                                            False |
|                                                                             |
|          Variable : force                                                   |
|             Internal Name :                                           force |
|             Quantity Type :                                           Force |
|             Participant Display Name :                                force |
|             Data Type :                                                Real |
|             Tensor Type :                                            Vector |
|             Is Extensive :                                             True |
|       Regions (6)                                                           |
|          Region : cylinder                                                  |
|             Internal Name :                                        cylinder |
|             Topology :                                              Surface |
|             Input Variables :                                            [] |
|             Output Variables :                                      [force] |
|             Region Discretization Type :                        Mesh Region |
|                                                                             |
|          Region : d8b0bb73-1d68-4795-9b6f-6b2467eb5a7b_fluid                |
|             Internal Name :      d8b0bb73-1d68-4795-9b6f-6b2467eb5a7b_fluid |
|             Topology :                                               Volume |
|             Input Variables :                                            [] |
|             Output Variables :                                           [] |
|             Region Discretization Type :                        Mesh Region |
|                                                                             |
|          Region : fsi                                                       |
|             Internal Name :                                             fsi |
|             Topology :                                              Surface |
|             Input Variables :                                [displacement] |
|             Output Variables :                                      [force] |
|             Region Discretization Type :                        Mesh Region |
|                                                                             |
|          Region : inlet                                                     |
|             Internal Name :                                           inlet |
|             Topology :                                              Surface |
|             Input Variables :                                            [] |
|             Output Variables :                                           [] |
|             Region Discretization Type :                        Mesh Region |
|                                                                             |
|          Region : outlet                                                    |
|             Internal Name :                                          outlet |
|             Topology :                                              Surface |
|             Input Variables :                                            [] |
|             Output Variables :                                           [] |
|             Region Discretization Type :                        Mesh Region |
|                                                                             |
|          Region : wall                                                      |
|             Internal Name :                                            wall |
|             Topology :                                              Surface |
|             Input Variables :                                            [] |
|             Output Variables :                                      [force] |
|             Region Discretization Type :                        Mesh Region |
|       Properties                                                            |
|          Accepts New Inputs :                                         False |
|          Time Integration :                                        Implicit |
|       Update Control                                                        |
|          Option :                                         ProgramControlled |
|       Execution Control                                                     |
|          Option :                                         ExternallyManaged |
+-----------------------------------------------------------------------------+
|    MAPDL-2                                                                  |
+-----------------------------------------------------------------------------+
|       Internal Name :                                               MAPDL-2 |
|       Participant Type :                                              MAPDL |
|       Participant Display Name :                                    MAPDL-2 |
|       Dimension :                                                        3D |
|       Input Parameters :                                                 [] |
|       Output Parameters :                                                [] |
|       Participant Analysis Type :                                 Transient |
|       Restarts Supported :                                             True |
|       Variables (3)                                                         |
|          Variable : Force                                                   |
|             Internal Name :                                            FORC |
|             Quantity Type :                                           Force |
|             Location :                                                 Node |
|             Participant Display Name :                                Force |
|             Data Type :                                                Real |
|             Tensor Type :                                            Vector |
|             Is Extensive :                                             True |
|                                                                             |
|          Variable : Force_Density                                           |
|             Internal Name :                                            FDNS |
|             Quantity Type :                                           Force |
|             Location :                                              Element |
|             Participant Display Name :                        Force Density |
|             Data Type :                                                Real |
|             Tensor Type :                                            Vector |
|             Is Extensive :                                            False |
|                                                                             |
|          Variable : Incremental_Displacement                                |
|             Internal Name :                                            INCD |
|             Quantity Type :                        Incremental Displacement |
|             Location :                                                 Node |
|             Participant Display Name :             Incremental Displacement |
|             Data Type :                                                Real |
|             Tensor Type :                                            Vector |
|             Is Extensive :                                            False |
|       Regions (3)                                                           |
|          Region : System Coupling (Surface) Region 0                        |
|             Internal Name :                                          FSIN_1 |
|             Topology :                                              Surface |
|             Input Variables :                                  [FORC, FDNS] |
|             Output Variables :                                       [INCD] |
|             Region Discretization Type :                        Mesh Region |
|                                                                             |
|          Region : System Coupling (Surface) Region 1                        |
|             Internal Name :                                        _FIXEDSU |
|             Topology :                                              Surface |
|             Input Variables :                                  [FORC, FDNS] |
|             Output Variables :                                       [INCD] |
|             Region Discretization Type :                        Mesh Region |
|                                                                             |
|          Region : System Coupling (Surface) Region 2                        |
|             Internal Name :                                        _FRICSUZ |
|             Topology :                                              Surface |
|             Input Variables :                                  [FORC, FDNS] |
|             Output Variables :                                       [INCD] |
|             Region Discretization Type :                        Mesh Region |
|       Properties                                                            |
|          Accepts New Inputs :                                         False |
|          Time Integration :                                        Implicit |
|       Update Control                                                        |
|          Option :                                         ProgramControlled |
|       Execution Control                                                     |
|          Option :                                         ExternallyManaged |
+=============================================================================+
|                              Analysis Control                               |
+=============================================================================+
|    Analysis Type :                                                Transient |
|    Optimize If One Way :                                               True |
|    Allow Simultaneous Update :                                        False |
|    Partitioning Algorithm :                          SharedAllocateMachines |
|    Global Stabilization                                                     |
|       Option :                                                         None |
+=============================================================================+
|                           Coupling Interfaces (1)                           |
+=============================================================================+
|    Interface-1                                                              |
+-----------------------------------------------------------------------------+
|       Internal Name :                                           Interface-1 |
|       Side                                                                  |
|          Side: One                                                          |
|             Coupling Participant :                                 FLUENT-1 |
|             Region List :                                             [fsi] |
|             Reference Frame :                          GlobalReferenceFrame |
|             Instancing :                                               None |
|          Side: Two                                                          |
|             Coupling Participant :                                  MAPDL-2 |
|             Region List :                                          [FSIN_1] |
|             Reference Frame :                          GlobalReferenceFrame |
|             Instancing :                                               None |
|       Data Transfers (2)                                                    |
|          DataTransfer : Force                                               |
|             Internal Name :                                            FORC |
|             Suppress :                                                False |
|             Target Side :                                               Two |
|             Option :                                          UsingVariable |
|             Source Variable :                                         force |
|             Target Variable :                                          FORC |
|             Ramping Option :                                           None |
|             Relaxation Factor :                                    5.00e-01 |
|             Convergence Target :                                   1.00e-02 |
|             Mapping Type :                                     Conservative |
|          DataTransfer : displacement                                        |
|             Internal Name :                                    displacement |
|             Suppress :                                                False |
|             Target Side :                                               One |
|             Option :                                          UsingVariable |
|             Source Variable :                                          INCD |
|             Target Variable :                                  displacement |
|             Ramping Option :                                           None |
|             Relaxation Factor :                                    1.00e+00 |
|             Convergence Target :                                   1.00e-02 |
|             Mapping Type :                                ProfilePreserving |
|             Unmapped Value Option :                       ProgramControlled |
|       Mapping Control                                                       |
|          Stop If Poor Intersection :                                   True |
|          Poor Intersection Threshold :                             5.00e-01 |
|          Face Alignment :                                 ProgramControlled |
|          Absolute Gap Tolerance :                                   0.0 [m] |
|          Relative Gap Tolerance :                                  1.00e+00 |
+=============================================================================+
|                              Solution Control                               |
+=============================================================================+
|    Duration Option :                                                EndTime |
|    End Time :                                                       0.1 [s] |
|    Time Step Size :                                                0.01 [s] |
|    Minimum Iterations :                                                   1 |
|    Maximum Iterations :                                                   5 |
|    Use IP Address When Possible :                                      True |
+=============================================================================+
|                               Output Control                                |
+=============================================================================+
|    Option :                                                    StepInterval |
|    Generate CSV Chart Output :                                        False |
|    Write Initial Snapshot :                                            True |
|    Output Frequency :                                                   250 |
|    Results                                                                  |
|       Option :                                            ProgramControlled |
|       Include Instances :                                 ProgramControlled |
|       Type                                                                  |
|          Option :                                               EnsightGold |
+=============================================================================+

+-----------------------------------------------------------------------------+
| Warnings were found during data model validation.                           |
+-----------------------------------------------------------------------------+
| Warning: Participant MAPDL-2 (CouplingParticipant:MAPDL-2) has the          |
|     ExecutionControl 'Option' set to 'ExternallyManaged'. System Coupling   |
|     will not control the startup/shutdown behavior of this participant.     |
| Warning: Participant FLUENT-1 (CouplingParticipant:FLUENT-1) has the        |
|     ExecutionControl 'Option' set to 'ExternallyManaged'. System Coupling   |
|     will not control the startup/shutdown behavior of this participant.     |
| Warning: Unused input variables ['Force_Density'] (FDNS) on region FSIN_1   |
|     for MAPDL-2 (CouplingParticipant:MAPDL-2).                              |
| Warning: Unused input variables ['Force_Density', 'Force'] (FDNS, FORC) on  |
|     region _FRICSUZ for MAPDL-2 (CouplingParticipant:MAPDL-2).              |
| Warning: Unused input variables ['Force_Density', 'Force'] (FDNS, FORC) on  |
|     region _FIXEDSU for MAPDL-2 (CouplingParticipant:MAPDL-2).              |
+-----------------------------------------------------------------------------+

+=============================================================================+
|                            Execution Information                            |
+=============================================================================+
|                                                                             |
| System Coupling                                                             |
|   Command Line Arguments:                                                   |
|     -m cosimgui --grpcport=0.0.0.0:53357                                    |
|   Working Directory:                                                        |
|     /working                                                                |
|                                                                             |
| FLUENT-1                                                                    |
|   Not started by System Coupling                                            |
|                                                                             |
| MAPDL-2                                                                     |
|   Not started by System Coupling                                            |
|                                                                             |
+=============================================================================+
Successfully connected to System Coupling
Awaiting connections from coupling participants... done.

+=============================================================================+
|                              Build Information                              |
+-----------------------------------------------------------------------------+
| System Coupling                                                             |
|   2024 R2: Build ID: 48974af Build Date: 2024-05-13T13:51                   |
| FLUENT-1                                                                    |
|   ANSYS Fluent 24.0 2.0 0.0 Build Time: May 13 2024 11:01:41 EDT  Build Id: |
|   10192                                                                     |
| MAPDL-2                                                                     |
|   Mechanical APDL Release                  Build 24.2     UP20240603        |
|   DISTRIBUTED LINUX x64    Version                                          |
+=============================================================================+

===============================================================================
+=============================================================================+
|                                                                             |
|                           Analysis Initialization                           |
|                                                                             |
+=============================================================================+
===============================================================================

+-----------------------------------------------------------------------------+
|                               MESH STATISTICS                               |
+-----------------------------------------------------------------------------+
| Participant: FLUENT-1                                                       |
|   Number of face regions                                                  1 |
|     Number of faces                                                      84 |
|       Quadrilateral                                                      84 |
|     Area (m2)                                                     8.200e-03 |
|   Bounding Box (m)                                                          |
|     Minimum                              [ 5.000e-02 -1.000e-02  0.000e+00] |
|     Maximum                              [ 4.500e-01  1.000e-02  1.000e-02] |
|                                                                             |
| Participant: MAPDL-2                                                        |
|   Number of face regions                                                  1 |
|     Number of faces                                                     104 |
|       Quadrilateral8                                                    104 |
|     Area (m2)                                                     8.220e-03 |
|   Bounding Box (m)                                                          |
|     Minimum                              [ 4.899e-02 -1.000e-02  0.000e+00] |
|     Maximum                              [ 4.500e-01  1.000e-02  1.000e-02] |
|                                                                             |
| Total                                                                       |
|   Number of cells                                                         0 |
|   Number of faces                                                       188 |
|   Number of nodes                                                       693 |
+-----------------------------------------------------------------------------+


+-----------------------------------------------------------------------------+
|                               MAPPING SUMMARY                               |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
| Interface-1                         |                                       |
|   Force                             |                                       |
|     Mapped Area [%]                 |       100               100           |
|     Mapped Elements [%]             |       100               100           |
|     Mapped Nodes [%]                |       100               100           |
|   displacement                      |                                       |
|     Mapped Area [%]                 |       100               100           |
|     Mapped Elements [%]             |       100               100           |
|     Mapped Nodes [%]                |       100               100           |
+-----------------------------------------------------------------------------+


+-----------------------------------------------------------------------------+
|                            Transfer Diagnostics                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |                                       |
|       Sum x                         |    -3.78E-14         -3.78E-14        |
|       Sum y                         |    -4.42E-29         -5.61E-28        |
|       Sum z                         |     0.00E+00          0.00E+00        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |                                       |
|       Weighted Average x            |     0.00E+00          0.00E+00        |
|       Weighted Average y            |     0.00E+00          0.00E+00        |
|       Weighted Average z            |     0.00E+00          0.00E+00        |
+-----------------------------------------------------------------------------+

===============================================================================
+=============================================================================+
|                                                                             |
|                              Coupled Solution                               |
|                                                                             |
+=============================================================================+
===============================================================================


+=============================================================================+
| COUPLING STEP = 1                         SIMULATION TIME = 1.00000E-02 [s] |
+=============================================================================+


NOTE: System Coupling analysis settings will override Fluent calculation settings

COUPLING STEP = 1        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.00E+00          1.00E+00        |
|       Sum x                         |    -3.78E-14         -3.78E-14        |
|       Sum y                         |    -4.42E-29         -5.61E-28        |
|       Sum z                         |     0.00E+00          0.00E+00        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     1.00E+00          1.00E+00        |
|       Weighted Average x            |    -5.47E-19         -5.47E-19        |
|       Weighted Average y            |     1.77E-31          1.78E-31        |
|       Weighted Average z            |     3.80E-34          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
     1  1.0000e+00  4.9048e-03  1.4517e-04  0.0000e+00  0:00:01   19
     2  1.0000e+00  9.1003e-03  7.8288e-03  0.0000e+00  0:00:01   18
     3  4.6252e-01  3.9585e-03  2.9783e-03  0.0000e+00  0:00:01   17
     4  2.5246e-01  2.2003e-03  1.2802e-03  0.0000e+00  0:00:01   16
     5  1.6992e-01  1.4894e-03  6.2937e-04  0.0000e+00  0:00:01   15
     6  1.2482e-01  1.0146e-03  3.6791e-04  8.2650e-15  0:00:01   14
     7  9.3311e-02  7.5039e-04  2.5012e-04  6.9633e-15  0:00:00   13
     8  7.2581e-02  5.5055e-04  1.8278e-04  5.1688e-15  0:00:00   12
     9  5.7295e-02  4.1527e-04  1.3735e-04  3.5978e-15  0:00:00   11
    10  4.4910e-02  3.2724e-04  1.0546e-04  2.3513e-15  0:00:00   10
    11  3.5425e-02  2.6834e-04  7.8464e-05  1.7795e-15  0:00:00    9

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    12  2.8258e-02  2.3050e-04  5.9950e-05  1.3607e-15  0:00:00    8
    13  2.2452e-02  2.0420e-04  4.5911e-05  1.0958e-15  0:00:00    7
    14  1.8038e-02  1.8550e-04  3.5619e-05  8.4633e-16  0:00:00    6
    15  1.4437e-02  1.7051e-04  2.7875e-05  6.6764e-16  0:00:00    5
    16  1.1594e-02  1.6217e-04  2.2027e-05  5.3094e-16  0:00:00    4
    17  9.3596e-03  1.5499e-04  1.7488e-05  3.9742e-16  0:00:00    3
    18  7.5035e-03  1.5092e-04  1.3952e-05  3.0056e-16  0:00:00    2
    19  6.0272e-03  1.4779e-04  1.1137e-05  2.2384e-16  0:00:00    1
    20  4.8696e-03  1.4539e-04  8.9986e-06  1.6958e-16  0:00:00    0
Flow time = 0.01s, time step = 1
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |         Not yet converged             |

COUPLING STEP = 1        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.04E+00          9.39E-01        |
|       Sum x                         |     2.45E+00          1.22E+00        |
|       Sum y                         |    -2.56E-01         -1.28E-01        |
|       Sum z                         |    -3.66E-16         -1.83E-16        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     7.55E-01          7.39E-01        |
|       Weighted Average x            |     4.82E-05          4.83E-05        |
|       Weighted Average y            |    -4.49E-06         -4.50E-06        |
|       Weighted Average z            |     1.50E-21          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    20  4.8696e-03  1.4539e-04  8.9986e-06  1.6958e-16  0:00:01   20

Updating mesh at iteration... done.
    21  7.4702e-03  1.5155e-04  9.5654e-06  5.8720e-13  0:00:04   19
    22  7.2550e-03  2.2751e-04  2.1755e-05  5.4446e-13  0:00:03   18
    23  4.1580e-03  1.8510e-04  1.0651e-05  4.5307e-13  0:00:03   17
    24  2.9373e-03  1.6373e-04  7.1331e-06  3.6596e-13  0:00:02   16
    25  2.2644e-03  1.5234e-04  5.0978e-06  2.9019e-13  0:00:02   15
    26  1.7612e-03  1.4700e-04  3.6852e-06  2.2776e-13  0:00:01   14
    27  1.3682e-03  1.4364e-04  2.7631e-06  1.7847e-13  0:00:01   13
    28  1.0886e-03  1.4122e-04  2.1766e-06  1.3932e-13  0:00:01   12
    29  8.9400e-04  1.3961e-04  1.7247e-06  1.0840e-13  0:00:01   11
!   29 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.01s, time step = 1

COUPLING STEP = 1        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     6.24E-02          4.40E-01        |
|       Sum x                         |     2.45E+00          1.84E+00        |
|       Sum y                         |    -1.40E-01         -1.34E-01        |
|       Sum z                         |     5.55E-11          2.78E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     2.49E-01          2.44E-01        |
|       Weighted Average x            |     7.20E-05          7.22E-05        |
|       Weighted Average y            |    -4.69E-06         -4.70E-06        |
|       Weighted Average z            |     3.11E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    29  8.9400e-04  1.3961e-04  1.7247e-06  1.0840e-13  0:00:01   20
!   29 solution is converged

Updating mesh at iteration... done.
    30  2.4894e-03  1.4234e-04  2.3768e-06  4.2897e-13  0:00:04   19
    31  2.5226e-03  1.7476e-04  8.1508e-06  3.7695e-13  0:00:03   18
    32  1.1808e-03  1.5620e-04  2.7835e-06  3.0641e-13  0:00:03   17
    33  7.3031e-04  1.4660e-04  1.7947e-06  2.4375e-13  0:00:02   16
!   33 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.01s, time step = 1

COUPLING STEP = 1        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.65E-02          2.02E-01        |
|       Sum x                         |     2.45E+00          2.15E+00        |
|       Sum y                         |    -1.38E-01         -1.36E-01        |
|       Sum z                         |     7.07E-11          4.92E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     1.06E-01          1.04E-01        |
|       Weighted Average x            |     8.38E-05          8.40E-05        |
|       Weighted Average y            |    -4.75E-06         -4.76E-06        |
|       Weighted Average z            |     5.51E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    33  7.3031e-04  1.4660e-04  1.7947e-06  2.4375e-13  0:00:03   20

Updating mesh at iteration... done.
    34  1.2604e-03  1.4459e-04  1.6260e-06  3.5553e-13  0:00:05   19
    35  1.2512e-03  1.5537e-04  3.8135e-06  2.9843e-13  0:00:04   18
    36  5.9332e-04  1.4625e-04  1.3552e-06  2.3842e-13  0:00:03   17
!   36 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.01s, time step = 1

COUPLING STEP = 1        COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.16E-02          9.21E-02        |
|       Sum x                         |     2.45E+00          2.30E+00        |
|       Sum y                         |    -1.37E-01         -1.36E-01        |
|       Sum z                         |     7.40E-11          6.16E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     4.89E-02          4.79E-02        |
|       Weighted Average x            |     8.97E-05          8.99E-05        |
|       Weighted Average y            |    -4.77E-06         -4.78E-06        |
|       Weighted Average z            |     6.90E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    36  5.9332e-04  1.4625e-04  1.3552e-06  2.3842e-13  0:00:04   20

Updating mesh at iteration... done.
    37  6.7688e-04  1.4295e-04  1.1142e-06  2.7047e-13  0:00:06   19
!   37 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 2                         SIMULATION TIME = 2.00000E-02 [s] |
+=============================================================================+

Flow time = 0.01s, time step = 1

COUPLING STEP = 2        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     5.28E-03          4.18E-02        |
|       Sum x                         |     2.45E+00          2.38E+00        |
|       Sum y                         |    -1.36E-01         -1.36E-01        |
|       Sum z                         |     7.25E-11          6.70E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.07E-01          7.87E-01        |
|       Weighted Average x            |     2.97E-04          2.98E-04        |
|       Weighted Average y            |    -1.69E-05         -1.69E-05        |
|       Weighted Average z            |     7.35E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    37  6.7688e-04  1.4295e-04  1.1142e-06  2.7047e-13  0:00:07   20
    38  4.8132e-01  1.1981e-02  7.8543e-03  5.3051e-12  0:00:05   19
    39  3.6458e-01  5.5233e-03  3.6745e-03  6.1884e-12  0:00:04   18
    40  2.6527e-01  2.8371e-03  1.8738e-03  4.7735e-12  0:00:03   17
    41  1.8315e-01  1.4565e-03  9.9338e-04  3.3054e-12  0:00:03   16
    42  1.3035e-01  7.9492e-04  5.6664e-04  2.3912e-12  0:00:02   15
    43  9.4627e-02  5.2744e-04  3.4442e-04  1.6477e-12  0:00:02   14
    44  6.9776e-02  3.9874e-04  2.2392e-04  1.2218e-12  0:00:01   13
    45  5.0605e-02  2.8844e-04  1.4592e-04  8.2784e-13  0:00:01   12
    46  3.7687e-02  2.1548e-04  1.0004e-04  6.1974e-13  0:00:01   11
    47  2.8419e-02  1.6385e-04  7.2671e-05  4.7917e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    48  2.1766e-02  1.2880e-04  5.6652e-05  3.8111e-13  0:00:01    9
    49  1.6979e-02  1.0100e-04  4.5374e-05  2.9797e-13  0:00:00    8
    50  1.3418e-02  8.0203e-05  3.6006e-05  2.2728e-13  0:00:00    7
    51  1.0863e-02  6.2262e-05  2.9034e-05  1.8079e-13  0:00:00    6
    52  8.8196e-03  5.0599e-05  2.2541e-05  1.3832e-13  0:00:00    5
    53  7.2939e-03  4.0355e-05  1.7810e-05  1.0822e-13  0:00:00    4
    54  6.1277e-03  3.3014e-05  1.4124e-05  8.3066e-14  0:00:00    3
    55  5.1085e-03  2.7609e-05  1.1186e-05  6.3665e-14  0:00:00    2
    56  4.2543e-03  2.3512e-05  8.9437e-06  4.9244e-14  0:00:00    1
    57  3.5571e-03  2.0557e-05  7.2210e-06  3.8272e-14  0:00:00    0
Flow time = 0.02s, time step = 2
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |         Not yet converged             |

COUPLING STEP = 2        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     5.60E-01          4.64E-01        |
|       Sum x                         |     1.21E+00          1.79E+00        |
|       Sum y                         |     3.05E-01          8.44E-02        |
|       Sum z                         |     2.07E-11          4.39E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.29E-02          8.25E-02        |
|       Weighted Average x            |     2.73E-04          2.73E-04        |
|       Weighted Average y            |    -9.12E-06         -9.13E-06        |
|       Weighted Average z            |    -2.94E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    57  3.5571e-03  2.0557e-05  7.2210e-06  3.8272e-14  0:00:01   20

Updating mesh at iteration... done.
    58  5.8264e-03  2.2146e-05  8.0823e-06  3.8972e-13  0:00:04   19
    59  5.4443e-03  3.9460e-05  2.0416e-05  3.3194e-13  0:00:03   18
    60  3.5062e-03  2.8662e-05  1.2697e-05  2.2464e-13  0:00:02   17
    61  2.3951e-03  2.1309e-05  7.6976e-06  1.6143e-13  0:00:02   16
    62  1.7634e-03  1.7150e-05  4.9826e-06  1.2042e-13  0:00:02   15
    63  1.3401e-03  1.5003e-05  3.4340e-06  9.1008e-14  0:00:01   14
    64  1.0632e-03  1.3278e-05  2.4970e-06  6.9281e-14  0:00:01   13
    65  8.4554e-04  1.2333e-05  1.9130e-06  5.3086e-14  0:00:01   12
!   65 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.02s, time step = 2

COUPLING STEP = 2        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.40E-02          2.25E-01        |
|       Sum x                         |     1.21E+00          1.50E+00        |
|       Sum y                         |     9.72E-02          9.08E-02        |
|       Sum z                         |    -1.57E-11          1.41E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     3.62E-02          3.60E-02        |
|       Weighted Average x            |     2.62E-04          2.63E-04        |
|       Weighted Average y            |    -8.92E-06         -8.93E-06        |
|       Weighted Average z            |    -6.43E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    65  8.4554e-04  1.2333e-05  1.9130e-06  5.3086e-14  0:00:01   20

Updating mesh at iteration... done.
    66  1.4606e-03  1.3225e-05  1.7748e-06  1.5499e-13  0:00:04   19
    67  1.3137e-03  1.6736e-05  3.7148e-06  1.2775e-13  0:00:03   18
    68  7.2088e-04  1.2941e-05  1.5864e-06  8.9208e-14  0:00:03   17
!   68 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.02s, time step = 2

COUPLING STEP = 2        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     4.46E-03          1.09E-01        |
|       Sum x                         |     1.22E+00          1.36E+00        |
|       Sum y                         |     9.60E-02          9.34E-02        |
|       Sum z                         |    -2.15E-11         -3.73E-12        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     1.84E-02          1.83E-02        |
|       Weighted Average x            |     2.57E-04          2.57E-04        |
|       Weighted Average y            |    -8.82E-06         -8.84E-06        |
|       Weighted Average z            |    -8.30E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    68  7.2088e-04  1.2941e-05  1.5864e-06  8.9208e-14  0:00:03   20

Updating mesh at iteration... done.
    69  7.9593e-04  1.2470e-05  1.3917e-06  1.2710e-13  0:00:06   19
!   69 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.02s, time step = 2

COUPLING STEP = 2        COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.79E-03          5.24E-02        |
|       Sum x                         |     1.22E+00          1.29E+00        |
|       Sum y                         |     9.31E-02          9.32E-02        |
|       Sum z                         |    -2.12E-11         -1.25E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     9.08E-03          9.03E-03        |
|       Weighted Average x            |     2.54E-04          2.55E-04        |
|       Weighted Average y            |    -8.83E-06         -8.84E-06        |
|       Weighted Average z            |    -9.18E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    69  7.9593e-04  1.2470e-05  1.3917e-06  1.2710e-13  0:00:06   20

Updating mesh at iteration... done.
    70  6.0794e-04  1.2971e-05  1.7309e-06  1.2982e-13  0:00:08   19
!   70 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 3                         SIMULATION TIME = 3.00000E-02 [s] |
+=============================================================================+

Flow time = 0.02s, time step = 2

COUPLING STEP = 3        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     5.10E-04          2.58E-02        |
|       Sum x                         |     1.22E+00          1.26E+00        |
|       Sum y                         |     9.37E-02          9.35E-02        |
|       Sum z                         |    -2.32E-11         -1.78E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.45E-01          8.23E-01        |
|       Weighted Average x            |     3.51E-04          3.51E-04        |
|       Weighted Average y            |    -2.82E-06         -2.82E-06        |
|       Weighted Average z            |    -7.12E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    70  6.0794e-04  1.2971e-05  1.7309e-06  1.2982e-13  0:00:08   20
    71  7.9825e-02  4.4370e-03  9.3662e-04  4.2889e-12  0:00:06   19
    72  6.4467e-02  2.0722e-03  5.1783e-04  2.8394e-12  0:00:05   18
    73  5.1163e-02  1.0555e-03  3.0670e-04  2.0085e-12  0:00:04   17
    74  3.8758e-02  5.7604e-04  1.9346e-04  1.4069e-12  0:00:03   16
    75  2.9151e-02  3.5626e-04  1.3103e-04  1.0513e-12  0:00:02   15
    76  2.2221e-02  2.3073e-04  9.4020e-05  7.8291e-13  0:00:02   14
    77  1.7175e-02  1.5645e-04  6.9948e-05  5.6678e-13  0:00:01   13
    78  1.3311e-02  1.1099e-04  5.3073e-05  4.2838e-13  0:00:01   12
    79  1.0339e-02  8.0285e-05  4.1048e-05  3.1514e-13  0:00:01   11
    80  8.1394e-03  6.0871e-05  3.2163e-05  2.4489e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    81  6.4593e-03  4.9099e-05  2.5384e-05  1.8607e-13  0:00:01    9
    82  5.1668e-03  3.7234e-05  1.9966e-05  1.3741e-13  0:00:00    8
    83  4.0830e-03  3.1796e-05  1.6015e-05  1.0767e-13  0:00:00    7
    84  3.2997e-03  2.5837e-05  1.2779e-05  8.1508e-14  0:00:00    6
    85  2.6709e-03  2.2091e-05  1.0289e-05  6.2836e-14  0:00:00    5
    86  2.1721e-03  1.9021e-05  8.3148e-06  4.8450e-14  0:00:00    4
    87  1.7704e-03  1.6532e-05  6.7451e-06  3.7370e-14  0:00:00    3
    88  1.4529e-03  1.4623e-05  5.4916e-06  2.8913e-14  0:00:00    2
    89  1.2012e-03  1.3105e-05  4.4786e-06  2.2421e-14  0:00:00    1
    90  9.9570e-04  1.1899e-05  3.6563e-06  1.7435e-14  0:00:00    0
!   90 solution is converged
Flow time = 0.03s, time step = 3
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 3        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     4.72E-01          4.33E-01        |
|       Sum x                         |     9.07E-01          1.08E+00        |
|       Sum y                         |    -1.64E-01         -3.51E-02        |
|       Sum z                         |    -2.32E-10         -1.25E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     2.60E-02          2.55E-02        |
|       Weighted Average x            |     3.41E-04          3.42E-04        |
|       Weighted Average y            |    -7.35E-06         -7.36E-06        |
|       Weighted Average z            |    -1.38E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    90  9.9570e-04  1.1899e-05  3.6563e-06  1.7435e-14  0:00:02   20

Updating mesh at iteration... done.
    91  2.0529e-03  1.2546e-05  4.2589e-06  3.5061e-14  0:00:05   19
    92  2.2842e-03  3.3049e-05  1.1663e-05  9.7476e-14  0:00:04   18
    93  1.4471e-03  2.3315e-05  7.5181e-06  5.2694e-14  0:00:03   17
    94  9.5847e-04  1.7087e-05  4.4687e-06  3.1098e-14  0:00:02   16
!   94 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.03s, time step = 3

COUPLING STEP = 3        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     3.58E-02          1.87E-01        |
|       Sum x                         |     9.05E-01          9.93E-01        |
|       Sum y                         |    -3.27E-02         -3.39E-02        |
|       Sum z                         |    -2.36E-10         -1.81E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     8.37E-03          8.25E-03        |
|       Weighted Average x            |     3.38E-04          3.38E-04        |
|       Weighted Average y            |    -7.30E-06         -7.31E-06        |
|       Weighted Average z            |    -1.91E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    94  9.5847e-04  1.7087e-05  4.4687e-06  3.1098e-14  0:00:03   20

Updating mesh at iteration... done.
    95  7.9779e-04  1.3567e-05  2.8743e-06  5.2829e-14  0:00:06   19
!   95 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.03s, time step = 3

COUPLING STEP = 3        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.00E-02          8.37E-02        |
|       Sum x                         |     9.05E-01          9.49E-01        |
|       Sum y                         |    -4.06E-02         -3.73E-02        |
|       Sum z                         |    -2.35E-10         -2.08E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     4.15E-03          4.09E-03        |
|       Weighted Average x            |     3.36E-04          3.37E-04        |
|       Weighted Average y            |    -7.42E-06         -7.43E-06        |
|       Weighted Average z            |    -2.19E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    95  7.9779e-04  1.3567e-05  2.8743e-06  5.2829e-14  0:00:06   20

Updating mesh at iteration... done.
    96  6.4359e-04  1.6986e-05  2.5248e-06  7.1611e-14  0:00:08   19
!   96 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.03s, time step = 3

COUPLING STEP = 3        COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     5.08E-03          3.73E-02        |
|       Sum x                         |     9.05E-01          9.27E-01        |
|       Sum y                         |    -3.84E-02         -3.79E-02        |
|       Sum z                         |    -2.36E-10         -2.22E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     2.06E-03          2.03E-03        |
|       Weighted Average x            |     3.35E-04          3.36E-04        |
|       Weighted Average y            |    -7.44E-06         -7.45E-06        |
|       Weighted Average z            |    -2.33E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    96  6.4359e-04  1.6986e-05  2.5248e-06  7.1611e-14  0:00:08   20

Updating mesh at iteration... done.
    97  4.8419e-04  1.5526e-05  1.8376e-06  6.0134e-14  0:00:10   19
!   97 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 4                         SIMULATION TIME = 4.00000E-02 [s] |
+=============================================================================+

Flow time = 0.03s, time step = 3

COUPLING STEP = 4        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.77E-03          1.62E-02        |
|       Sum x                         |     9.04E-01          9.15E-01        |
|       Sum y                         |    -3.88E-02         -3.83E-02        |
|       Sum z                         |    -2.37E-10         -2.29E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.14E-01          7.92E-01        |
|       Weighted Average x            |     2.89E-04          2.90E-04        |
|       Weighted Average y            |    -8.40E-06         -8.41E-06        |
|       Weighted Average z            |    -6.55E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
    97  4.8419e-04  1.5526e-05  1.8376e-06  6.0134e-14  0:00:10   20
    98  3.9582e-02  3.5918e-03  8.2252e-04  4.4025e-12  0:00:08   19
    99  3.0993e-02  1.6662e-03  4.6343e-04  2.6277e-12  0:00:06   18
   100  2.5199e-02  8.4363e-04  2.7986e-04  1.6751e-12  0:00:05   17
   101  2.0294e-02  4.6740e-04  1.7933e-04  1.1319e-12  0:00:04   16
   102  1.5752e-02  2.7936e-04  1.2235e-04  8.0179e-13  0:00:03   15
   103  1.2811e-02  1.8184e-04  8.7150e-05  5.9384e-13  0:00:02   14
   104  1.0251e-02  1.2527e-04  6.4317e-05  4.3828e-13  0:00:02   13
   105  8.2670e-03  9.1418e-05  4.8744e-05  3.3373e-13  0:00:01   12
   106  6.5928e-03  6.8935e-05  3.7353e-05  2.5694e-13  0:00:01   11
   107  5.1994e-03  5.1736e-05  2.8925e-05  1.9385e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   108  4.1431e-03  4.0757e-05  2.2549e-05  1.4646e-13  0:00:01    9
   109  3.2887e-03  3.2929e-05  1.7689e-05  1.1028e-13  0:00:01    8
   110  2.6203e-03  2.7455e-05  1.4021e-05  8.6183e-14  0:00:00    7
   111  2.0717e-03  2.2674e-05  1.1145e-05  6.4840e-14  0:00:00    6
   112  1.6594e-03  1.9055e-05  8.9157e-06  4.9933e-14  0:00:00    5
   113  1.3389e-03  1.6295e-05  7.1320e-06  3.8081e-14  0:00:00    4
   114  1.0931e-03  1.4209e-05  5.7251e-06  2.9523e-14  0:00:00    3
   115  8.9487e-04  1.2564e-05  4.5936e-06  2.3216e-14  0:00:00    2
!  115 solution is converged
Flow time = 0.04s, time step = 4
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 4        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.23E-01          2.09E-01        |
|       Sum x                         |     7.72E-01          8.44E-01        |
|       Sum y                         |     1.70E-02         -1.07E-02        |
|       Sum z                         |    -4.69E-10         -3.49E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     1.38E-02          1.35E-02        |
|       Weighted Average x            |     2.84E-04          2.85E-04        |
|       Weighted Average y            |    -7.43E-06         -7.44E-06        |
|       Weighted Average z            |    -1.52E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   115  8.9487e-04  1.2564e-05  4.5936e-06  2.3216e-14  0:00:01   20

Updating mesh at iteration... done.
   116  1.1328e-03  1.2178e-05  4.1444e-06  3.9370e-14  0:00:04   19
   117  1.0191e-03  1.8887e-05  4.8401e-06  7.1240e-14  0:00:03   18
   118  6.8268e-04  1.3768e-05  3.3945e-06  3.3818e-14  0:00:03   17
!  118 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.04s, time step = 4

COUPLING STEP = 4        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.60E-02          8.99E-02        |
|       Sum x                         |     7.71E-01          8.08E-01        |
|       Sum y                         |    -1.20E-02         -1.13E-02        |
|       Sum z                         |    -4.74E-10         -4.12E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     3.69E-03          3.65E-03        |
|       Weighted Average x            |     2.83E-04          2.84E-04        |
|       Weighted Average y            |    -7.46E-06         -7.47E-06        |
|       Weighted Average z            |    -2.11E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   118  6.8268e-04  1.3768e-05  3.3945e-06  3.3818e-14  0:00:03   20

Updating mesh at iteration... done.
   119  5.5297e-04  1.1557e-05  2.5747e-06  3.0785e-14  0:00:06   19
!  119 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.04s, time step = 4

COUPLING STEP = 4        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     4.65E-03          4.07E-02        |
|       Sum x                         |     7.71E-01          7.89E-01        |
|       Sum y                         |    -9.61E-03         -1.05E-02        |
|       Sum z                         |    -4.73E-10         -4.42E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     1.85E-03          1.83E-03        |
|       Weighted Average x            |     2.82E-04          2.83E-04        |
|       Weighted Average y            |    -7.43E-06         -7.44E-06        |
|       Weighted Average z            |    -2.42E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   119  5.5297e-04  1.1557e-05  2.5747e-06  3.0785e-14  0:00:06   20

Updating mesh at iteration... done.
   120  4.3902e-04  1.2264e-05  1.9689e-06  3.4481e-14  0:00:08   19
!  120 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.04s, time step = 4

COUPLING STEP = 4        COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.26E-03          1.83E-02        |
|       Sum x                         |     7.71E-01          7.80E-01        |
|       Sum y                         |    -9.57E-03         -1.00E-02        |
|       Sum z                         |    -4.74E-10         -4.58E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     9.21E-04          9.12E-04        |
|       Weighted Average x            |     2.82E-04          2.83E-04        |
|       Weighted Average y            |    -7.41E-06         -7.43E-06        |
|       Weighted Average z            |    -2.58E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   120  4.3902e-04  1.2264e-05  1.9689e-06  3.4481e-14  0:00:08   20

Updating mesh at iteration... done.
   121  3.6476e-04  1.0998e-05  1.5905e-06  2.8588e-14  0:00:10   19
!  121 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 5                         SIMULATION TIME = 5.00000E-02 [s] |
+=============================================================================+

Flow time = 0.04s, time step = 4

COUPLING STEP = 5        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     1.66E-03          7.71E-03        |
|       Sum x                         |     7.71E-01          7.76E-01        |
|       Sum y                         |    -9.63E-03         -9.82E-03        |
|       Sum z                         |    -4.74E-10         -4.66E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     7.67E-01          7.47E-01        |
|       Weighted Average x            |     1.50E-04          1.50E-04        |
|       Weighted Average y            |    -8.89E-06         -8.91E-06        |
|       Weighted Average z            |    -9.39E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   121  3.6476e-04  1.0998e-05  1.5905e-06  2.8588e-14  0:00:10   20
   122  3.0829e-02  3.2261e-03  7.6479e-04  3.7708e-12  0:00:08   19
   123  2.2309e-02  1.4956e-03  4.4404e-04  2.0985e-12  0:00:06   18
   124  1.8289e-02  7.5482e-04  2.7198e-04  1.2268e-12  0:00:05   17
   125  1.4531e-02  4.1743e-04  1.7515e-04  7.9661e-13  0:00:04   16
   126  1.1927e-02  2.5104e-04  1.1941e-04  5.6177e-13  0:00:03   15
   127  9.8226e-03  1.6339e-04  8.4681e-05  4.2027e-13  0:00:02   14
   128  7.9807e-03  1.1360e-04  6.2091e-05  3.1955e-13  0:00:02   13
   129  6.3957e-03  8.2273e-05  4.6540e-05  2.4401e-13  0:00:01   12
   130  5.0441e-03  6.1154e-05  3.5181e-05  1.8473e-13  0:00:01   11
   131  4.0107e-03  4.6625e-05  2.6838e-05  1.4168e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   132  3.1907e-03  3.5981e-05  2.0686e-05  1.0580e-13  0:00:01    9
   133  2.5456e-03  2.8410e-05  1.6077e-05  8.0217e-14  0:00:01    8
   134  2.0467e-03  2.3206e-05  1.2583e-05  6.0736e-14  0:00:00    7
   135  1.6541e-03  1.9312e-05  9.9391e-06  4.7917e-14  0:00:00    6
   136  1.3403e-03  1.6109e-05  7.8549e-06  3.6043e-14  0:00:00    5
   137  1.0894e-03  1.3647e-05  6.2422e-06  2.7685e-14  0:00:00    4
   138  8.9695e-04  1.1885e-05  4.9720e-06  2.1884e-14  0:00:00    3
!  138 solution is converged
Flow time = 0.05s, time step = 5
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 5        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     7.36E-02          7.08E-02        |
|       Sum x                         |     7.02E-01          7.39E-01        |
|       Sum y                         |     3.01E-02          1.01E-02        |
|       Sum z                         |    -6.76E-10         -5.71E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     1.30E-02          1.30E-02        |
|       Weighted Average x            |     1.48E-04          1.48E-04        |
|       Weighted Average y            |    -8.19E-06         -8.21E-06        |
|       Weighted Average z            |    -1.36E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   138  8.9695e-04  1.1885e-05  4.9720e-06  2.1884e-14  0:00:01   20

Updating mesh at iteration... done.
   139  1.0197e-03  1.0940e-05  4.3506e-06  3.7402e-14  0:00:04   19
   140  8.3944e-04  1.1125e-05  4.3009e-06  4.3975e-14  0:00:03   18
!  140 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.05s, time step = 5

COUPLING STEP = 5        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     4.64E-03          3.24E-02        |
|       Sum x                         |     7.02E-01          7.20E-01        |
|       Sum y                         |     9.00E-03          9.56E-03        |
|       Sum z                         |    -6.78E-10         -6.25E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     3.00E-03          3.01E-03        |
|       Weighted Average x            |     1.47E-04          1.47E-04        |
|       Weighted Average y            |    -8.21E-06         -8.23E-06        |
|       Weighted Average z            |    -1.87E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   140  8.3944e-04  1.1125e-05  4.3009e-06  4.3975e-14  0:00:04   20

Updating mesh at iteration... done.
   141  6.5455e-04  9.4664e-06  3.2812e-06  2.9362e-14  0:00:06   19
!  141 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.05s, time step = 5

COUPLING STEP = 5        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.16E-03          1.52E-02        |
|       Sum x                         |     7.02E-01          7.11E-01        |
|       Sum y                         |     9.66E-03          9.61E-03        |
|       Sum z                         |    -6.79E-10         -6.52E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     1.53E-03          1.55E-03        |
|       Weighted Average x            |     1.47E-04          1.47E-04        |
|       Weighted Average y            |    -8.21E-06         -8.23E-06        |
|       Weighted Average z            |    -2.15E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   141  6.5455e-04  9.4664e-06  3.2812e-06  2.9362e-14  0:00:06   20

Updating mesh at iteration... done.
   142  5.1411e-04  8.9371e-06  2.4707e-06  2.4176e-14  0:00:08   19
!  142 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.05s, time step = 5

COUPLING STEP = 5        COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     9.02E-04          6.84E-03        |
|       Sum x                         |     7.02E-01          7.07E-01        |
|       Sum y                         |     1.04E-02          9.99E-03        |
|       Sum z                         |    -6.79E-10         -6.65E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     7.73E-04          7.81E-04        |
|       Weighted Average x            |     1.46E-04          1.47E-04        |
|       Weighted Average y            |    -8.20E-06         -8.22E-06        |
|       Weighted Average z            |    -2.28E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   142  5.1411e-04  8.9371e-06  2.4707e-06  2.4176e-14  0:00:09   20

Updating mesh at iteration... done.
   143  4.0666e-04  8.1103e-06  1.8891e-06  1.9948e-14  0:00:10   19
!  143 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 6                         SIMULATION TIME = 6.00000E-02 [s] |
+=============================================================================+

Flow time = 0.05s, time step = 5

COUPLING STEP = 6        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     4.83E-04          3.03E-03        |
|       Sum x                         |     7.02E-01          7.04E-01        |
|       Sum y                         |     1.07E-02          1.03E-02        |
|       Sum z                         |    -6.79E-10         -6.72E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.31E-01          8.09E-01        |
|       Weighted Average x            |    -2.61E-05         -2.61E-05        |
|       Weighted Average y            |    -7.14E-06         -7.16E-06        |
|       Weighted Average z            |    -6.26E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   143  4.0666e-04  8.1103e-06  1.8891e-06  1.9948e-14  0:00:10   20
   144  2.7844e-02  3.0242e-03  7.2566e-04  2.7218e-12  0:00:08   19
   145  1.9345e-02  1.4107e-03  4.3072e-04  1.5130e-12  0:00:06   18
   146  1.5385e-02  7.1530e-04  2.6747e-04  7.9213e-13  0:00:05   17
   147  1.2598e-02  3.9810e-04  1.7311e-04  4.9272e-13  0:00:04   16
   148  1.0317e-02  2.4131e-04  1.1748e-04  3.8050e-13  0:00:03   15
   149  8.6726e-03  1.5588e-04  8.2759e-05  2.6832e-13  0:00:02   14
   150  7.0342e-03  1.0766e-04  6.0090e-05  2.0252e-13  0:00:02   13
   151  5.6347e-03  7.7696e-05  4.4593e-05  1.5760e-13  0:00:01   12
   152  4.4852e-03  5.7462e-05  3.3497e-05  1.2292e-13  0:00:01   11
   153  3.5876e-03  4.3359e-05  2.5380e-05  9.4858e-14  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   154  2.8600e-03  3.3136e-05  1.9366e-05  7.1728e-14  0:00:01    9
   155  2.2932e-03  2.5914e-05  1.4908e-05  5.4094e-14  0:00:01    8
   156  1.8405e-03  2.0761e-05  1.1573e-05  4.1353e-14  0:00:00    7
   157  1.4856e-03  1.6999e-05  9.0384e-06  3.2430e-14  0:00:00    6
   158  1.2125e-03  1.4067e-05  7.0825e-06  2.5029e-14  0:00:00    5
   159  1.0014e-03  1.1631e-05  5.6121e-06  2.0241e-14  0:00:00    4
   160  8.2080e-04  9.9767e-06  4.4358e-06  1.6030e-14  0:00:00    3
!  160 solution is converged
Flow time = 0.06s, time step = 6
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 6        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.40E-01          1.29E-01        |
|       Sum x                         |     6.72E-01          6.88E-01        |
|       Sum y                         |    -3.65E-02         -1.31E-02        |
|       Sum z                         |    -7.85E-10         -7.28E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     3.54E-02          3.71E-02        |
|       Weighted Average x            |    -2.65E-05         -2.66E-05        |
|       Weighted Average y            |    -7.97E-06         -7.99E-06        |
|       Weighted Average z            |    -7.38E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   160  8.2080e-04  9.9767e-06  4.4358e-06  1.6030e-14  0:00:01   20

Updating mesh at iteration... done.
   161  8.8209e-04  8.8190e-06  3.9277e-06  3.2729e-14  0:00:04   19
!  161 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.06s, time step = 6

COUPLING STEP = 6        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     8.86E-03          5.72E-02        |
|       Sum x                         |     6.72E-01          6.80E-01        |
|       Sum y                         |    -1.16E-02         -1.24E-02        |
|       Sum z                         |    -7.85E-10         -7.57E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     1.22E-02          1.28E-02        |
|       Weighted Average x            |    -2.68E-05         -2.69E-05        |
|       Weighted Average y            |    -7.95E-06         -7.96E-06        |
|       Weighted Average z            |    -1.01E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   161  8.8209e-04  8.8190e-06  3.9277e-06  3.2729e-14  0:00:04   20

Updating mesh at iteration... done.
   162  8.0070e-04  1.2311e-05  4.2314e-06  4.5531e-14  0:00:07   19
!  162 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.06s, time step = 6

COUPLING STEP = 6        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     3.29E-03          2.56E-02        |
|       Sum x                         |     6.71E-01          6.76E-01        |
|       Sum y                         |    -1.17E-02         -1.21E-02        |
|       Sum z                         |    -7.86E-10         -7.72E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     6.07E-03          6.39E-03        |
|       Weighted Average x            |    -2.70E-05         -2.71E-05        |
|       Weighted Average y            |    -7.93E-06         -7.95E-06        |
|       Weighted Average z            |    -1.16E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   162  8.0070e-04  1.2311e-05  4.2314e-06  4.5531e-14  0:00:07   20

Updating mesh at iteration... done.
   163  6.2792e-04  1.0429e-05  3.1240e-06  3.0445e-14  0:00:09   19
!  163 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.06s, time step = 6

COUPLING STEP = 6        COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     3.55E-03          9.62E-03        |
|       Sum x                         |     6.71E-01          6.73E-01        |
|       Sum y                         |    -1.31E-02         -1.26E-02        |
|       Sum z                         |    -7.86E-10         -7.79E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     3.08E-03          3.24E-03        |
|       Weighted Average x            |    -2.71E-05         -2.71E-05        |
|       Weighted Average y            |    -7.95E-06         -7.97E-06        |
|       Weighted Average z            |    -1.23E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   163  6.2792e-04  1.0429e-05  3.1240e-06  3.0445e-14  0:00:09   20

Updating mesh at iteration... done.
   164  4.6671e-04  9.4137e-06  2.2310e-06  2.7089e-14  0:00:10   19
!  164 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 7                         SIMULATION TIME = 7.00000E-02 [s] |
+=============================================================================+

Flow time = 0.06s, time step = 6

COUPLING STEP = 7        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     1.49E-03          3.52E-03        |
|       Sum x                         |     6.71E-01          6.72E-01        |
|       Sum y                         |    -1.33E-02         -1.29E-02        |
|       Sum z                         |    -7.86E-10         -7.83E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     7.93E-01          7.72E-01        |
|       Weighted Average x            |    -1.94E-04         -1.94E-04        |
|       Weighted Average y            |    -8.60E-06         -8.62E-06        |
|       Weighted Average z            |    -4.90E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   164  4.6671e-04  9.4137e-06  2.2310e-06  2.7089e-14  0:00:11   20
   165  2.5955e-02  2.8177e-03  6.9351e-04  1.5743e-12  0:00:08   19
   166  1.7449e-02  1.3156e-03  4.2040e-04  8.9463e-13  0:00:06   18
   167  1.3815e-02  6.7143e-04  2.6352e-04  6.3549e-13  0:00:05   17
   168  1.1545e-02  3.7439e-04  1.7085e-04  4.7733e-13  0:00:04   16
   169  9.7534e-03  2.2615e-04  1.1568e-04  3.6813e-13  0:00:03   15
   170  8.2315e-03  1.4660e-04  8.1064e-05  2.8890e-13  0:00:03   14
   171  6.7326e-03  1.0101e-04  5.8423e-05  2.2997e-13  0:00:03   13
   172  5.4176e-03  7.2834e-05  4.3011e-05  1.8336e-13  0:00:02   12
   173  4.2941e-03  5.3218e-05  3.2015e-05  1.4631e-13  0:00:02   11
   174  3.4367e-03  3.9795e-05  2.4067e-05  1.1638e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   175  2.7705e-03  3.0303e-05  1.8255e-05  9.2512e-14  0:00:01    9
   176  2.2524e-03  2.3377e-05  1.3965e-05  7.3482e-14  0:00:01    8
   177  1.8260e-03  1.8530e-05  1.0750e-05  5.8002e-14  0:00:01    7
   178  1.4941e-03  1.4993e-05  8.3492e-06  4.5223e-14  0:00:00    6
   179  1.2157e-03  1.2084e-05  6.5261e-06  3.5615e-14  0:00:00    5
   180  9.9621e-04  1.0180e-05  5.1132e-06  2.8362e-14  0:00:00    4
!  180 solution is converged
Flow time = 0.07000000000000001s, time step = 7
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 7        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     4.54E-02          4.38E-02        |
|       Sum x                         |     6.32E-01          6.52E-01        |
|       Sum y                         |     7.38E-03         -2.77E-03        |
|       Sum z                         |    -7.21E-10         -7.52E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     5.28E-03          5.25E-03        |
|       Weighted Average x            |    -1.93E-04         -1.93E-04        |
|       Weighted Average y            |    -8.25E-06         -8.27E-06        |
|       Weighted Average z            |     3.42E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   180  9.9621e-04  1.0180e-05  5.1132e-06  2.8362e-14  0:00:01   20

Updating mesh at iteration... done.
   181  9.9536e-04  8.8718e-06  4.3351e-06  2.3167e-14  0:00:04   19
!  181 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.07s, time step = 7

COUPLING STEP = 7        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.69E-03          2.12E-02        |
|       Sum x                         |     6.32E-01          6.42E-01        |
|       Sum y                         |    -1.28E-03         -2.03E-03        |
|       Sum z                         |    -7.20E-10         -7.36E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     1.59E-03          1.65E-03        |
|       Weighted Average x            |    -1.93E-04         -1.94E-04        |
|       Weighted Average y            |    -8.23E-06         -8.24E-06        |
|       Weighted Average z            |     4.96E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   181  9.9536e-04  8.8718e-06  4.3351e-06  2.3167e-14  0:00:04   20

Updating mesh at iteration... done.
   182  8.3560e-04  8.3187e-06  3.7617e-06  2.3414e-14  0:00:07   19
!  182 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.07s, time step = 7

COUPLING STEP = 7        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     1.47E-03          9.48E-03        |
|       Sum x                         |     6.32E-01          6.37E-01        |
|       Sum y                         |    -3.66E-03         -2.84E-03        |
|       Sum z                         |    -7.19E-10         -7.28E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     7.52E-04          7.81E-04        |
|       Weighted Average x            |    -1.93E-04         -1.94E-04        |
|       Weighted Average y            |    -8.25E-06         -8.27E-06        |
|       Weighted Average z            |     5.85E-18          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   182  8.3560e-04  8.3187e-06  3.7617e-06  2.3414e-14  0:00:07   20

Updating mesh at iteration... done.
   183  6.6574e-04  7.3133e-06  2.9514e-06  2.0332e-14  0:00:09   19
!  183 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 8                         SIMULATION TIME = 8.00000E-02 [s] |
+=============================================================================+

Flow time = 0.07s, time step = 7

COUPLING STEP = 8        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     1.09E-03          3.92E-03        |
|       Sum x                         |     6.32E-01          6.34E-01        |
|       Sum y                         |    -3.35E-03         -3.10E-03        |
|       Sum z                         |    -7.19E-10         -7.23E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.13E-01          7.91E-01        |
|       Weighted Average x            |    -3.14E-04         -3.15E-04        |
|       Weighted Average y            |    -8.56E-06         -8.58E-06        |
|       Weighted Average z            |     5.50E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   183  6.6574e-04  7.3133e-06  2.9514e-06  2.0332e-14  0:00:09   20
   184  2.4118e-02  2.6756e-03  6.6009e-04  2.2700e-12  0:00:07   19
   185  1.5972e-02  1.2548e-03  4.0506e-04  1.4895e-12  0:00:06   18
   186  1.2789e-02  6.4427e-04  2.5650e-04  1.0848e-12  0:00:04   17
   187  1.0851e-02  3.6113e-04  1.6703e-04  8.0550e-13  0:00:03   16
   188  9.5568e-03  2.1921e-04  1.1313e-04  6.0291e-13  0:00:03   15
   189  7.9534e-03  1.4331e-04  7.8960e-05  4.5461e-13  0:00:02   14
   190  6.3665e-03  9.7530e-05  5.6625e-05  3.4956e-13  0:00:02   13
   191  5.2124e-03  7.0234e-05  4.1352e-05  2.6861e-13  0:00:01   12
   192  4.1771e-03  5.0900e-05  3.0503e-05  2.1001e-13  0:00:01   11
   193  3.3906e-03  3.7933e-05  2.2810e-05  1.6446e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   194  2.7509e-03  2.8551e-05  1.7241e-05  1.2951e-13  0:00:01    9
   195  2.2415e-03  2.1894e-05  1.3150e-05  1.0166e-13  0:00:01    8
   196  1.8293e-03  1.7165e-05  1.0075e-05  7.9826e-14  0:00:00    7
   197  1.4932e-03  1.3429e-05  7.7783e-06  6.2498e-14  0:00:00    6
   198  1.2317e-03  1.1114e-05  6.0229e-06  4.8853e-14  0:00:00    5
   199  1.0097e-03  9.0543e-06  4.7168e-06  3.8120e-14  0:00:00    4
   200  8.3603e-04  7.7450e-06  3.7000e-06  2.9807e-14  0:00:00    3
!  200 solution is converged
Flow time = 0.08s, time step = 8
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 8        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     6.95E-02          6.49E-02        |
|       Sum x                         |     5.87E-01          6.11E-01        |
|       Sum y                         |    -1.92E-03         -2.51E-03        |
|       Sum z                         |    -5.24E-10         -6.24E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     4.51E-03          4.45E-03        |
|       Weighted Average x            |    -3.13E-04         -3.14E-04        |
|       Weighted Average y            |    -8.54E-06         -8.56E-06        |
|       Weighted Average z            |     1.27E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   200  8.3603e-04  7.7450e-06  3.7000e-06  2.9807e-14  0:00:01   20

Updating mesh at iteration... done.
   201  8.4162e-04  6.8235e-06  3.0897e-06  3.3635e-14  0:00:04   19
!  201 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.08s, time step = 8

COUPLING STEP = 8        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.84E-03          3.01E-02        |
|       Sum x                         |     5.86E-01          5.98E-01        |
|       Sum y                         |    -2.48E-03         -2.49E-03        |
|       Sum z                         |    -5.24E-10         -5.74E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     1.20E-03          1.23E-03        |
|       Weighted Average x            |    -3.14E-04         -3.14E-04        |
|       Weighted Average y            |    -8.55E-06         -8.57E-06        |
|       Weighted Average z            |     1.75E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   201  8.4162e-04  6.8235e-06  3.0897e-06  3.3635e-14  0:00:04   20

Updating mesh at iteration... done.
   202  7.2044e-04  7.7014e-06  2.7308e-06  3.1682e-14  0:00:07   19
!  202 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.08s, time step = 8

COUPLING STEP = 8        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.11E-03          1.33E-02        |
|       Sum x                         |     5.86E-01          5.92E-01        |
|       Sum y                         |    -2.43E-03         -2.46E-03        |
|       Sum z                         |    -5.23E-10         -5.48E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     5.83E-04          5.99E-04        |
|       Weighted Average x            |    -3.14E-04         -3.15E-04        |
|       Weighted Average y            |    -8.54E-06         -8.56E-06        |
|       Weighted Average z            |     2.01E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   202  7.2044e-04  7.7014e-06  2.7308e-06  3.1682e-14  0:00:07   20

Updating mesh at iteration... done.
   203  5.5811e-04  6.2700e-06  2.0953e-06  2.6161e-14  0:00:09   19
!  203 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.08s, time step = 8

COUPLING STEP = 8        COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     2.23E-03          4.90E-03        |
|       Sum x                         |     5.86E-01          5.89E-01        |
|       Sum y                         |    -2.29E-03         -2.37E-03        |
|       Sum z                         |    -5.22E-10         -5.35E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     2.87E-04          2.95E-04        |
|       Weighted Average x            |    -3.14E-04         -3.15E-04        |
|       Weighted Average y            |    -8.54E-06         -8.56E-06        |
|       Weighted Average z            |     2.14E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   203  5.5811e-04  6.2700e-06  2.0953e-06  2.6161e-14  0:00:09   20

Updating mesh at iteration... done.
   204  4.5832e-04  5.8413e-06  1.6637e-06  2.1931e-14  0:00:10   19
!  204 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 9                         SIMULATION TIME = 9.00000E-02 [s] |
+=============================================================================+

Flow time = 0.08s, time step = 8

COUPLING STEP = 9        COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     1.18E-03          1.68E-03        |
|       Sum x                         |     5.86E-01          5.88E-01        |
|       Sum y                         |    -2.31E-03         -2.34E-03        |
|       Sum z                         |    -5.22E-10         -5.29E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.28E-01          8.06E-01        |
|       Weighted Average x            |    -3.67E-04         -3.68E-04        |
|       Weighted Average y            |    -8.62E-06         -8.64E-06        |
|       Weighted Average z            |     6.05E-19          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   204  4.5832e-04  5.8413e-06  1.6637e-06  2.1931e-14  0:00:11   20
   205  2.3430e-02  2.5310e-03  6.2365e-04  3.6121e-12  0:00:08   19
   206  1.5487e-02  1.1873e-03  3.8638e-04  2.2409e-12  0:00:06   18
   207  1.2271e-02  6.1389e-04  2.4656e-04  1.4969e-12  0:00:05   17
   208  1.0832e-02  3.4622e-04  1.6225e-04  1.0447e-12  0:00:04   16
   209  9.3797e-03  2.1048e-04  1.0979e-04  7.4951e-13  0:00:03   15
   210  7.9449e-03  1.3638e-04  7.6203e-05  5.4888e-13  0:00:02   14
   211  6.5311e-03  9.3415e-05  5.4515e-05  4.0862e-13  0:00:02   13
   212  5.2282e-03  6.6969e-05  3.9711e-05  3.0833e-13  0:00:01   12
   213  4.1704e-03  4.9454e-05  2.9331e-05  2.3452e-13  0:00:01   11
   214  3.3282e-03  3.6412e-05  2.1826e-05  1.7999e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   215  2.6528e-03  2.7424e-05  1.6423e-05  1.3830e-13  0:00:01    9
   216  2.1245e-03  2.0649e-05  1.2399e-05  1.0663e-13  0:00:01    8
   217  1.7253e-03  1.6249e-05  9.4336e-06  8.2412e-14  0:00:00    7
   218  1.4032e-03  1.2767e-05  7.2701e-06  6.3920e-14  0:00:00    6
   219  1.1499e-03  1.0350e-05  5.6146e-06  4.9672e-14  0:00:00    5
   220  9.4821e-04  8.3917e-06  4.3867e-06  3.8630e-14  0:00:00    4
!  220 solution is converged
Flow time = 0.09s, time step = 9
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 9        COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.61E-02          2.47E-02        |
|       Sum x                         |     5.23E-01          5.56E-01        |
|       Sum y                         |    -7.73E-03         -5.03E-03        |
|       Sum z                         |    -2.67E-10         -3.98E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     3.85E-03          3.71E-03        |
|       Weighted Average x            |    -3.65E-04         -3.66E-04        |
|       Weighted Average y            |    -8.71E-06         -8.73E-06        |
|       Weighted Average z            |     1.65E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   220  9.4821e-04  8.3917e-06  4.3867e-06  3.8630e-14  0:00:01   20

Updating mesh at iteration... done.
   221  9.0470e-04  7.6178e-06  3.6394e-06  4.3829e-14  0:00:04   19
!  221 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.09s, time step = 9

COUPLING STEP = 9        COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.24E-03          1.25E-02        |
|       Sum x                         |     5.23E-01          5.39E-01        |
|       Sum y                         |    -5.61E-03         -5.32E-03        |
|       Sum z                         |    -2.65E-10         -3.31E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     1.32E-03          1.33E-03        |
|       Weighted Average x            |    -3.66E-04         -3.67E-04        |
|       Weighted Average y            |    -8.73E-06         -8.75E-06        |
|       Weighted Average z            |     2.29E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   221  9.0470e-04  7.6178e-06  3.6394e-06  4.3829e-14  0:00:04   20

Updating mesh at iteration... done.
   222  7.7546e-04  6.4021e-06  3.0497e-06  3.7308e-14  0:00:07   19
!  222 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.09s, time step = 9

COUPLING STEP = 9        COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     3.06E-04          6.17E-03        |
|       Sum x                         |     5.23E-01          5.31E-01        |
|       Sum y                         |    -4.63E-03         -4.97E-03        |
|       Sum z                         |    -2.64E-10         -2.98E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     6.29E-04          6.35E-04        |
|       Weighted Average x            |    -3.66E-04         -3.67E-04        |
|       Weighted Average y            |    -8.71E-06         -8.73E-06        |
|       Weighted Average z            |     2.63E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   222  7.7546e-04  6.4021e-06  3.0497e-06  3.7308e-14  0:00:07   20

Updating mesh at iteration... done.
   223  6.0162e-04  5.5743e-06  2.3710e-06  3.0807e-14  0:00:09   19
!  223 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

+=============================================================================+
| COUPLING STEP = 10                        SIMULATION TIME = 1.00000E-01 [s] |
+=============================================================================+

Flow time = 0.09s, time step = 9

COUPLING STEP = 10       COUPLING ITERATION = 1
+=============================================================================+
|                             COUPLING ITERATIONS                             |
+-----------------------------------------------------------------------------+
|                                     |      Source            Target         |
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 1                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     2.26E-04          3.02E-03        |
|       Sum x                         |     5.23E-01          5.27E-01        |
|       Sum y                         |    -4.46E-03         -4.71E-03        |
|       Sum z                         |    -2.63E-10         -2.80E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |         Not yet converged             |
|       RMS Change                    |     8.26E-01          8.05E-01        |
|       Weighted Average x            |    -3.36E-04         -3.37E-04        |
|       Weighted Average y            |    -9.07E-06         -9.09E-06        |
|       Weighted Average z            |     1.85E-18          0.00E+00        |

Updating solution at time level N...
 done.

Updating mesh at time level N... done.

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   223  6.0162e-04  5.5743e-06  2.3710e-06  3.0807e-14  0:00:09   20
   224  2.2981e-02  2.4249e-03  5.8414e-04  4.4048e-12  0:00:07   19
   225  1.4529e-02  1.1458e-03  3.6850e-04  2.5871e-12  0:00:05   18
   226  1.1800e-02  5.9504e-04  2.3652e-04  1.6400e-12  0:00:04   17
   227  1.0619e-02  3.3739e-04  1.5590e-04  1.1011e-12  0:00:03   16
   228  9.0651e-03  2.0554e-04  1.0537e-04  7.7264e-13  0:00:03   15
   229  7.5923e-03  1.3382e-04  7.3245e-05  5.5969e-13  0:00:02   14
   230  6.0904e-03  9.1166e-05  5.2334e-05  4.1226e-13  0:00:02   13
   231  4.9379e-03  6.5381e-05  3.7943e-05  3.0846e-13  0:00:01   12
   232  3.9054e-03  4.6714e-05  2.7860e-05  2.3277e-13  0:00:01   11
   233  3.1144e-03  3.4235e-05  2.0674e-05  1.7814e-13  0:00:01   10

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   234  2.4932e-03  2.5879e-05  1.5488e-05  1.3707e-13  0:00:01    9
   235  1.9813e-03  1.9516e-05  1.1707e-05  1.0573e-13  0:00:01    8
   236  1.5947e-03  1.5278e-05  8.9188e-06  8.1770e-14  0:00:00    7
   237  1.3080e-03  1.2225e-05  6.8464e-06  6.3311e-14  0:00:00    6
   238  1.0777e-03  9.6452e-06  5.3162e-06  4.9048e-14  0:00:00    5
   239  8.9233e-04  8.1141e-06  4.1222e-06  3.7938e-14  0:00:00    4
!  239 solution is converged
Flow time = 0.09999999999999999s, time step = 10
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |

COUPLING STEP = 10       COUPLING ITERATION = 2
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 2                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     6.46E-02          5.97E-02        |
|       Sum x                         |     4.59E-01          4.93E-01        |
|       Sum y                         |     2.49E-04         -2.23E-03        |
|       Sum z                         |     1.71E-11         -1.32E-10        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     3.05E-03          2.94E-03        |
|       Weighted Average x            |    -3.35E-04         -3.36E-04        |
|       Weighted Average y            |    -8.99E-06         -9.01E-06        |
|       Weighted Average z            |     1.99E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   239  8.9233e-04  8.1141e-06  4.1222e-06  3.7938e-14  0:00:01   20

Updating mesh at iteration... done.
   240  8.2429e-04  7.0932e-06  3.4274e-06  3.1389e-14  0:00:04   19
!  240 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.1s, time step = 10

COUPLING STEP = 10       COUPLING ITERATION = 3
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 3                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     1.67E-03          2.89E-02        |
|       Sum x                         |     4.58E-01          4.76E-01        |
|       Sum y                         |    -1.89E-03         -2.06E-03        |
|       Sum z                         |     1.82E-11         -5.67E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     1.68E-03          1.68E-03        |
|       Weighted Average x            |    -3.36E-04         -3.37E-04        |
|       Weighted Average y            |    -8.98E-06         -9.00E-06        |
|       Weighted Average z            |     2.71E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   240  8.2429e-04  7.0932e-06  3.4274e-06  3.1389e-14  0:00:04   20

Updating mesh at iteration... done.
   241  7.2722e-04  6.6301e-06  2.8241e-06  2.7580e-14  0:00:07   19
!  241 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.1s, time step = 10

COUPLING STEP = 10       COUPLING ITERATION = 4
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 4                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |         Not yet converged             |
|       RMS Change                    |     2.53E-03          1.25E-02        |
|       Sum x                         |     4.59E-01          4.67E-01        |
|       Sum y                         |    -1.84E-03         -1.95E-03        |
|       Sum z                         |     1.89E-11         -1.89E-11        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     7.86E-04          7.87E-04        |
|       Weighted Average x            |    -3.36E-04         -3.37E-04        |
|       Weighted Average y            |    -8.98E-06         -9.00E-06        |
|       Weighted Average z            |     3.09E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   241  7.2722e-04  6.6301e-06  2.8241e-06  2.7580e-14  0:00:07   20

Updating mesh at iteration... done.
   242  5.9093e-04  6.1421e-06  2.2522e-06  2.2174e-14  0:00:09   19
!  242 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
Flow time = 0.1s, time step = 10

COUPLING STEP = 10       COUPLING ITERATION = 5
+-----------------------------------------------------------------------------+
|                           COUPLING ITERATION = 5                            |
+-----------------------------------------------------------------------------+
| MAPDL-2                             |                                       |
|   Interface: Interface-1            |                                       |
|     Force                           |             Converged                 |
|       RMS Change                    |     1.37E-03          5.32E-03        |
|       Sum x                         |     4.59E-01          4.63E-01        |
|       Sum y                         |    -2.03E-03         -1.99E-03        |
|       Sum z                         |     1.98E-11          4.59E-13        |
+-----------------------------------------------------------------------------+
| FLUENT-1                            |                                       |
|   Interface: Interface-1            |                                       |
|     displacement                    |             Converged                 |
|       RMS Change                    |     3.86E-04          3.87E-04        |
|       Weighted Average x            |    -3.36E-04         -3.37E-04        |
|       Weighted Average y            |    -8.98E-06         -9.00E-06        |
|       Weighted Average z            |     3.29E-17          0.00E+00        |

  iter  continuity  x-velocity  y-velocity  z-velocity     time/iter
   242  5.9093e-04  6.1421e-06  2.2522e-06  2.2174e-14  0:00:09   20

Updating mesh at iteration... done.
   243  4.7522e-04  5.3433e-06  1.7620e-06  1.7590e-14  0:00:10   19
!  243 solution is converged
+-----------------------------------------------------------------------------+
| Participant solution status         |                                       |
|   MAPDL-2                           |             Converged                 |
|   FLUENT-1                          |             Converged                 |
+=============================================================================+

===============================================================================
+=============================================================================+
|                                                                             |
|                                  Shut Down                                  |
|                                                                             |
+=============================================================================+
===============================================================================

+=============================================================================+
|                          Available Restart Points                           |
+=============================================================================+
| Restart Point                        | File Name                            |
+-----------------------------------------------------------------------------+
| Coupling Step 10                     | Restart_step10.h5                    |
+=============================================================================+

Fast-loading "/ansys_inc/v242/fluent/fluent24.2.0/addons/afd/lib/hdfio.bin"
Done.

Writing to 593f6f4d3a99:"/mnt/pyfluent/.//turek_hron_fluid-0-00010.cas.h5" in NODE0 mode and compression level 1 ...
Grouping cells for Laplace smoothing ...
        6728 cells,     1 zone  ...
       27150 faces,     8 zones ...
       13932 nodes,     1 zone  ...
  Done.
Done.

Writing to 593f6f4d3a99:"/mnt/pyfluent/.//turek_hron_fluid-0-00010.dat.h5" in NODE0 mode and compression level 1 ...
  Writing results.
Done.
Create new project file for writing: turek_hron_fluid_resolved.flprj
Flow time = 0.1s, time step = 10

Writing to 593f6f4d3a99:"/mnt/pyfluent/.//turek_hron_fluid-0-00010.cas.h5" in NODE0 mode and compression level 1 ...
Grouping cells for Laplace smoothing ...
        6728 cells,     1 zone  ...
       27150 faces,     8 zones ...
       13932 nodes,     1 zone  ...
  Done.
Done.

Writing to 593f6f4d3a99:"/mnt/pyfluent/.//turek_hron_fluid-0-00010.dat.h5" in NODE0 mode and compression level 1 ...
  Writing results.
Done.
+=============================================================================+
|                             Timing Summary [s]                              |
+=============================================================================+
| Total Time :                                                    6.64495E+01 |
| Coupling Participant Time                                                   |
|    FLUENT-1 :                                                   5.47020E+01 |
|    MAPDL-2 :                                                    4.56377E+00 |
|    Total :                                                      5.92658E+01 |
| Coupling Engine Time                                                        |
|    Solution Control :                                           4.03490E+00 |
|    Mesh Import :                                                1.57259E-02 |
|    Mapping Setup :                                              2.49505E-03 |
|    Mapping :                                                    6.77633E-03 |
|    Numerics :                                                   1.95904E-02 |
|    Misc. :                                                      3.10424E+00 |
|    Total :                                                      7.18373E+00 |
+=============================================================================+

+=============================================================================+
|                 System coupling run completed successfully.                 |
+=============================================================================+

Postprocessing#

Postprocess the structural results#

mapdl.finish()
mapdl.post1()
mapdl.nsel("s", "loc", "x", 0.45)  # select the right side of the beam
mapdl.nsel("r", "loc", "y", 0.00)  # select the top of the beam
tip_node = mapdl.nsel("r", "loc", "z", 0.005)[0]  # select the tip node
tip_y_0 = mapdl.get_value("node", tip_node, "loc", "y")
tip_y = []
nsets = mapdl.post_processing.nsets
for i in range(1, nsets + 1):
    mapdl.set(i, 1)
    u_y = mapdl.get_value("node", tip_node, "u", "y")
    tip_y.append(tip_y_0 + u_y)

time_values = mapdl.post_processing.time_values
plt.plot(time_values, tip_y)
plt.xlabel("t (s)")
plt.ylabel(r"$x_{tip}$ (m)")
plt.savefig("turek_horn_fsi2_tip_disp.png")
# If you want to see the in-line plot, comment following line.
plt.close()  # close the plot to avoid showing it in the docs.
../../_images/turek_horn_fsi2_tip_disp.png

Postprocess the fluids results#

use_window_resolution option not active inside containers or Ansys Lab environment

if fluent.results.graphics.picture.use_window_resolution.is_active():
    fluent.results.graphics.picture.use_window_resolution = False

fluent.results.graphics.picture.x_resolution = 1920
fluent.results.graphics.picture.y_resolution = 1440

fluent.results.graphics.contour["contour_static_pressure"] = {}
contour = fluent.results.graphics.contour["contour_static_pressure"]

contour.coloring.option = "banded"
contour.field = "pressure"
contour.filled = True

contour.surfaces_list = ["symmetry_bot"]
contour.display()

fluent.results.graphics.views.restore_view(view_name="front")
fluent.results.graphics.views.auto_scale()
fluent.results.graphics.picture.save_picture(
    file_name="turek_horn_fsi2_pressure_contour.png"
)
../../_images/turek_horn_fsi2_pressure_contour.png

Exit#

syc.exit()
fluent.exit()
mapdl.exit()
/opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/site-packages/ansys/mapdl/core/launcher.py:822: UserWarning: The environment variable 'PYMAPDL_START_INSTANCE' is set, hence the argument 'start_instance' is overwritten.
  warnings.warn(

Note#

The results shown in this example are for illustrative purposes only. To get similar results, you may need to run the simulation with an end_time equal to 15[s]. Refer to the section time step size, end time, output controls section to update the end time.

# The results shown below are at end_time as 15 [s] and it took approx. 2 hrs based on
# the compute resource used.Please note that the runtime may vary depending on the
# compute resources used.

# Velocity field at 15 [sec]
../../_images/turek_hron_velocity_field_at_15_sec.png
# Pressure field at 15 [sec]
../../_images/turek_hron_pressure_field_at_15_sec.png

References#

[1]. Turek, S., & Hron, J. (2006). Proposal for numerical benchmarking of fluid-structure interaction between an elastic object and laminar incompressible flow (pp. 371-385). Springer Berlin Heidelberg.

Total running time of the script: (1 minutes 51.383 seconds)

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