Regarding Large Deflections in Two Way FSI
 

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.

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.