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Fluid-Structure Interaction will Not Converge
Posted Apr 5, 2010, 8:47 p.m. EDT 3 Replies
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Hello Everyone,
I am trying to solve a fairly straight-forward (or so I thought) 2-dimensional fluid-structure interaction problem. The file is attached to this post.
Every time the model attempts to solve, the solution does not converge and there are warning of inverted elements. I have tried refining the mesh and changing mesh parameters, but no luck. I am now thinking that it is a setup problem, but I am unable to locate the problem.
If anyone has any suggestions, they will be greatly appreciated!
Thanks!
I am trying to solve a fairly straight-forward (or so I thought) 2-dimensional fluid-structure interaction problem. The file is attached to this post.
Every time the model attempts to solve, the solution does not converge and there are warning of inverted elements. I have tried refining the mesh and changing mesh parameters, but no luck. I am now thinking that it is a setup problem, but I am unable to locate the problem.
If anyone has any suggestions, they will be greatly appreciated!
Thanks!
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3 Replies Last Post Apr 6, 2010, 12:03 p.m. EDT
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Posted:
1 decade ago
Are you aware that you are solving for a Reynolds number of 10^7? In that case, you need very special treatment of flow in Comsol, if possible at all to simulate with reasonable mesh size.
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Posted:
1 decade ago
Thanks, Danial. Thanks for pointing that out. As you might have surmised, reducing the inlet velocity was able to have the model converge. Thanks
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Posted:
1 decade ago
You're welcome.