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[dadadiana]

Hi, I am currently trying to perform FSI by system coupling (Mechanical (Transient Structural) and CFX). 

I tried to follow the steps in the video: https://www.youtube.com/watch?v=FN2MfWBv3Sk&t=126s

I applied fixed support at each end of the beam, and used inlet (0.1m/s), outlet, symmetric boundary conditions and periodic interface for the fluid domain. I also used the Fluid Solid Interface for the beam and enabled mesh motion for the fluid domain. The solid is steel and fluid is air.

I got the error message saying "Update failed for the Solution component in System Coupling. The coupled update for system Transient Structural threw an exception. Error updating cell Solution in system Transient Structural. View the messages in Mechanical editor for more details."

 

So I went to the Mechanical editor and checked the log message, but I still don't understand the cause of the problem.

Does this mean the problem is raised from the structural part? I thought so at first, but the log message seems to suggest otherwise.

Thank you for your help in advance.

Underneath is a bit from the log file that I think may contain the error message (that I don't understand).

Thank you.

 

*** ERROR ***                           CP =       1.203   TIME= 15:08:23
 The system coupling service error notification: Participant Solution 1 
 encountered a fatal error.  Message: ANSYS CFX solver failed with a    
 fatal error.                                                           


 NUMBER OF WARNING MESSAGES ENCOUNTERED=          1
 NUMBER OF ERROR   MESSAGES ENCOUNTERED=          1



 ***** PROBLEM TERMINATED BY INDICATED ERROR(S) OR BY END OF INPUT DATA *****

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D I S T R I B U T E D   A N S Y S   S T A T I S T I C S

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Release: 2019 R2            Build: 19.4       Update: UP20190416   Platform: WINDOWS x64
Date Run: 02/18/2020   Time: 15:08     Process ID: 4888
Operating System: Windows 10  (Build: 18363)

Processor Model:         Intel(R) Core(TM) i7-3820 CPU @ 3.60GHz

Compiler: Intel(R) FORTRAN Compiler Version 17.0.6  (Build: 20171215)
          Intel(R) C/C++ Compiler Version 17.0.6  (Build: 20171215)
          Intel(R) Math Kernel Library Version 2017.0.3 Product Build 20170413

Number of machines requested            :    1
Total number of cores available         :    8
Number of physical cores available      :    4
Number of processes requested           :    2
Number of threads per process requested :    1
Total number of cores requested         :    2 (Distributed Memory Parallel)              
MPI Type: INTELMPI
MPI Version: Intel(R) MPI Library 2018 Update 3 for Windows* OS


GPU Acceleration: Not Requested