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Two way FSI coupled system problems

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Old   December 25, 2020, 16:21
Default Two way FSI coupled system problems
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Saeed Pashazanousi
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I'm using an student version of Ansys 2020 R2
I tried to simulate a plate oscillation affected by water free surface waves.
First I simulate the oscillation plate tutorial...I get the result...
Second I try to simulate my own case...
My case is below Image:
FSI2.png
Fluid domain Mesh as Image below:
FSI2-Fluid.jpg
Solid domain Mesh as Image below:
FSI2-Solid.jpg
I used a coupled system to use two solver as image below:
FSI-2way.jpg
But I got this error after some coupled iterations as image below:
FSI.jpg
I search the error on the net but I didn't get the answer...
I read some where student version not able to do a two way FSI coupled system...I contact with Ansys support but I don't get their answer yet...
May be I asked a silly question as their sight...
But I think problem is not the license...
CFX output as follow:

----------------------------------------------------------------------

COEFFICIENT LOOP ITERATION =39000 CPU SECONDS = 1.835E+04

----------------------------------------------------------------------

| Equation | Rate | RMS Res | Max Res | Linear Solution |

+----------------------+------+---------+---------+------------------+

| U-Mom-Bulk | 0.95 | 9.2E-03 | 6.9E-01 | 7.1E-04 OK|

| V-Mom-Bulk | 0.00 | 0.0E+00 | 0.0E+00 | 0.0E+00 OK|

| W-Mom-Bulk | 1.16 | 7.1E-02 | 4.7E+00 | 7.0E-04 OK|

| P-Vol | 0.97 | 1.3E-04 | 3.7E-03 | 9.9 2.9E-03 OK|

+----------------------+------+---------+---------+------------------+

| Mass-Water | 1.00 | 2.2E-03 | 6.3E-02 | 10.6 3.4E-08 OK|

+----------------------+------+---------+---------+------------------+



================================================== ====================

Convergence Warnings Summary

================================================== ====================



+-------------------------+------------------------------------------+

| Equation Class | Solve Location | Number of |

| | | Convergence |

| | | Failures |

+-------------------------+------------------------------------------+

| Momentum and Mass | DEFAULT | 1 |

| Volume Fractions | DEFAULT | 1 |

+-------------------------+---------------------------+--------------+



+--------------------------------------------------------------------+

| ERROR #001100279 has occurred in subroutine ErrAction. |

| Message: |

| A System Coupling error occurred while the request "AssignToken" |

| was being served. |

| |

| |

| |

| |

+--------------------------------------------------------------------+



+--------------------------------------------------------------------+

| Writing crash recovery file |

+--------------------------------------------------------------------+



+--------------------------------------------------------------------+

| ERROR #001100279 has occurred in subroutine ErrAction. |

| Message: |

| Stopped in routine CP_ServeUntil |

| |

| |

| |

| |

| |

+--------------------------------------------------------------------+



+--------------------------------------------------------------------+

| An error has occurred in cfx5solve: |

| |

| The ANSYS CFX solver exited with return code 1. No results file |

| has been created. |

+--------------------------------------------------------------------+



End of solution stage.



+--------------------------------------------------------------------+

| The following transient and backup files written by the ANSYS CFX |

| solver have been saved in the directory |

| E:/Thesis/Elastic-Wall/Elastic |

| Wall_pending/dp0_CFX_Solution_1/Fluid Flow CFX_002: |

| |

| 0_full.trn |

+--------------------------------------------------------------------+





+--------------------------------------------------------------------+

| Warning! |

| |

| The ANSYS CFX Solver has written a crash recovery file. This file |

| has been saved as E:/Thesis/Elastic-Wall/Elastic |

| Wall_pending/dp0_CFX_Solution_1/Fluid Flow CFX_002.res.err and may |

| be an aid to diagnosing the problem or restarting the run. More |

| details should be available in the solver output section of the |

| output file. |

+--------------------------------------------------------------------+





+--------------------------------------------------------------------+

| The following user files have been saved in the directory |

| E:/Thesis/Elastic-Wall/Elastic |

| Wall_pending/dp0_CFX_Solution_1/Fluid Flow CFX_002: |

| |

| trace |

+--------------------------------------------------------------------+





+--------------------------------------------------------------------+

| For CFX runs launched from Workbench, the final locations of |

| directories and files generated may differ from those shown. |

+--------------------------------------------------------------------+





This run of the ANSYS CFX Solver has finished.
__________________
Best regards

Saeed Pashazanousi
Urmia University
Tel: 0098 936 811 864
What's App: 0098 936 811 8647
Email: st_s.pashazanousi@urmia.ac.ir
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