-
-
October 14, 2024 at 9:55 pmutsavpurkait2003Subscriber
I'm new to FSI and I'm trying to run a 2-way FSI model where a solid body falls with a velocity and impacts a water surface. I have set up the moving solid body in Transient Structural and the fluid domain in Fluent. Then I used System Coupling to run the simulation but I'm getting the following error:
Â
This file may contain appended logs from a sequence of runs, with the mostrecent output reported at the end of the file.Â===============================================================================Transcript output started: 2024-10-14 15:35:44ÂÂ===============================================================================+=============================================================================+|                                       ||             Summary of Coupling Setup             ||                                       |+=============================================================================+===============================================================================Â+=============================================================================+|             Coupling Participants (2)             |+=============================================================================+|                                       || Participant: Fluid Flow (Fluent)                      ||  Type :                              FLUENT ||  UpdateControls:                             ||    Option :                      ProgramControlled ||  Region: water_surface                          ||    Topology :                          Surface ||    Input Variables :                    displacement ||    Output Variables :                       force ||  Variable: displacement                          ||    Quantity Type :               Incremental Displacement ||    Location :                            Node ||    Tensor Type :                         Vector ||    Is Extensive :                         False ||    Data Type :                           Real ||  Variable: force                             ||    Quantity Type :                         Force ||    Location :                          Element ||    Tensor Type :                         Vector ||    Is Extensive :                          True ||    Data Type :                           Real ||                                       |+-----------------------------------------------------------------------------+|                                       || Participant: Transient Structural                      ||  Type :                               MAPDL ||  UpdateControls:                             ||    Option :                      ProgramControlled ||  Region: Fluid Solid Interface                      ||    Topology :                          Surface ||    Input Variables :                        Force ||    Output Variables :              Incremental_Displacement ||  Variable: Force                             ||    Quantity Type :                         Force ||    Location :                            Node ||    Tensor Type :                         Vector ||    Is Extensive :                          True ||    Data Type :                           Real ||  Variable: Incremental_Displacement                    ||    Quantity Type :               Incremental Displacement ||    Location :                            Node ||    Tensor Type :                         Vector ||    Is Extensive :                         False ||    Data Type :                           Real ||                                       |+=============================================================================+|               Analysis Control                |+=============================================================================+|                                       || Analysis Type :                          Transient || Global Stabilization :                         None || OptimizeIfOneWay :                          False || AllowSimultaneousUpdate :                       False || PartitioningAlgorithm :               SharedAllocateMachines ||                                       |+=============================================================================+|              Coupling Interfaces (1)              |+=============================================================================+|                                       || Interface: interface-1                           ||  Side: One                                ||    Coupling Participant :              Fluid Flow (Fluent) ||    Region List :                      water_surface ||    Reference Frame :                GlobalReferenceFrame ||    Instancing                              ||  Side: Two                                ||    Coupling Participant :              Transient Structural ||    Region List :                  Fluid Solid Interface ||    Reference Frame :                GlobalReferenceFrame ||    Instancing                              ||  Data Transfer: Data Transfer                       ||    Target Side :                           Two ||    Source Variable :                        force ||    Target Variable :                        Force ||    Mapping Type :                  Surface Conservative ||    Convergence Target :                     1.00E-02 ||    Ramping Option :                         None ||    Relaxation Factor :                     1.00E+00 ||  Data Transfer: Data Transfer 2                      ||    Target Side :                           One ||    Source Variable :              Incremental_Displacement ||    Target Variable :                    displacement ||    Unmapped Value Option :                 Nearest Value ||    Mapping Type :               Surface Profile Preserving ||    Convergence Target :                     1.00E-02 ||    Ramping Option :                         None ||    Relaxation Factor :                     1.00E+00 ||  Mapping Control:                             ||    Absolute Gap Tolerance :                   0.0 [m] ||    Face Alignment :                  ProgramControlled ||    Poor Intersection Threshold :                5.00e-01 ||    Relative Gap Tolerance :                   1.00e+00 ||    Stop If Poor Intersection :                   True ||                                       |+=============================================================================+|               Solution Control                |+=============================================================================+|                                       || Duration Option :                          EndTime || End Time :                             0.05 [s] || Maximum Iterations :                           5 || Minimum Iterations :                           1 || Time Step Size :                         0.005 [s] ||                                       |+=============================================================================+|                Output Control                |+=============================================================================+|                                       || Output Control Option :                      LastStep || Results                                   ||  Option :                        ProgramControlled ||  Type                                   ||    Option :                         EnsightGold || Write Initial Snapshot :                        True ||                                       |+=============================================================================+Â+-----------------------------------------------------------------------------+| Warnings were found during data model validation.              |+-----------------------------------------------------------------------------+| Warning: Participant Fluid Flow (Fluent) (CouplingParticipant:Solution 1)  ||   has the ExecutionControl 'Option' set to 'ExternallyManaged'. System  ||   Coupling will not control the startup/shutdown behavior of this     ||   participant.                              || Warning: Participant Transient Structural (CouplingParticipant:Solution)  ||   has the ExecutionControl 'Option' set to 'ExternallyManaged'. System  ||   Coupling will not control the startup/shutdown behavior of this     ||   participant.                              |+-----------------------------------------------------------------------------+ÂÂÂ+-----------------------------------------------------------------------------+| The variable locations of force and heatflow variables for all Fluent    || participants are set to 'Element'. Make sure that this is consistent with  || the setup within Fluent. When importing the SCI file (this includes running || inside Workbench), you can control the locations of these variables by   || using the 'SYC_FLUENT_CONSNODAL' environment variable. For more       || information, refer to System Coupling User's Guide.             |+-----------------------------------------------------------------------------+Awaiting connections from coupling participants... done.Â+=============================================================================+|               Build Information               |+-----------------------------------------------------------------------------+| System Coupling                               ||  2022 R1: Build ID: 3043b37 Build Date: 10 November 2021 08:28:57     || Fluid Flow (Fluent)                             ||  ANSYS Fluent 22.1.0, Build Time:Nov 29 2021 12:14:46 EST, Build Id:10213, ||  OS Version:win64                             || Transient Structural                            ||  Mechanical APDL Release 2022 R1     Build 22.1   UP20211129    ||  DISTRIBUTED WINDOWS x64 Version                     |+=============================================================================+Â===============================================================================+=============================================================================+|                                       ||              Analysis Initialization              ||                                       |+=============================================================================+===============================================================================ÂÂ+-----------------------------------------------------------------------------+| Low-level communication error -15: Connection was closed          |+-----------------------------------------------------------------------------+ÂTranscript output stopped: 2024-10-14 15:35:59===============================================================================
Can someone please help me out with this? -
October 15, 2024 at 12:26 pmFedericoAnsys Employee
Can you check the log files from your participants?
Fluent should have a transcript .trn and Mechanical should have an .out file. These output files may provide more details on where your coupled simulation has failed.
-
Viewing 1 reply thread
- You must be logged in to reply to this topic.
Ansys Innovation Space
Trending discussions
- How do I get my hands on Ansys Rocky DEM
- Non-Intersected faces found for matching interface periodic-walls
- Unburnt Hydrocarbons contour in ANSYS FORTE for sector mesh
- Help: About the expression of turbulent viscosity in Realizable k-e model
- Script Error
- Mass Conservation Issue in Methane Pyrolysis Shock Tube Simulation
- Facing trouble regarding setting up boundary conditions for SOEC Modeling
- convergence issue for transonic flow
- Running ANSYS Fluent on a HPC Cluster
- Point exception in erosion calculation
Top Contributors
-
1882
-
802
-
599
-
591
-
366
Top Rated Tags
© 2025 Copyright ANSYS, Inc. All rights reserved.
Ansys does not support the usage of unauthorized Ansys software. Please visit www.ansys.com to obtain an official distribution.