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Regarding Large Deflections in Two Way FSI

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Old   June 25, 2017, 12:01
Default Regarding Large Deflections in Two Way FSI
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srcredchi
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Hello Everyone,

I am working on Two Way FSI of a Flexible Body. I am unable to run the simulations of this flexible body due to large deformations. I have submitted few posts previously, some of you have given good suggestions and told me to go through documentation regarding Flexible body. I did and I tried but its not working. I don't know if the documentation which I am referring is valid for this case or not. Can anyone provide me any information or links or files regarding large deformations of a body and its FSI simulation, literally any information even if it slightly valuable for this case. It will be very helpful for me. Thank You.
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Old   June 26, 2017, 11:25
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Is your problem on the CFD or on the structural side of the FSI?

If structural: maybe ask in an ANSYS Mechanical forum

If CFD: is your problem related mesh deformation? If so, you can try changing mesh deformation control, or maybe give FLUENT's remeshing capabilities a try.
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Old   June 26, 2017, 11:59
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Quote:
Originally Posted by brunoc View Post
Is your problem on the CFD or on the structural side of the FSI?

If structural: maybe ask in an ANSYS Mechanical forum

If CFD: is your problem related mesh deformation? If so, you can try changing mesh deformation control, or maybe give FLUENT's remeshing capabilities a try.
Hello Bruno,

Problem is in CFD. On structural side everything is alright. The problem is related to mesh deformation. When I run simulation using very stiff material there will be no errors. When I use flexible material which deforms largely, I cannot run the simulations. I used remeshing in Fluent but I was unable to get it run. My personal opinion is CFX is better for Two Way FSI, correct me if I am wrong. Can you tell me what is the problem. I will always get a error as

| | | | The ANSYS CFX solver exited with return code 1.
No results file | | has been created. | +--------------------------------------------------------------------+
End of solution stage.
+--------------------------------------------------------------------+ |
An error has occurred in cfx5solve: | | | |
ANSYS Solver terminated with return code 256 | +--------------------------------------------------------------------+

I checked possible solution for this error, made the suggested changes but no results. Kindly help me if you can.
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