[ANSYS Meshing] Two-way FSI dynamic mesh issue

khhan0543 · January 31, 2017, 16:16

Hi there,

I wanted to couple transient structural with fluent, but keep having dynamic mesh issue - either 1) update-dynamic-mesh failed: negative cell volume detected or 2) divergence detected in AMG solverressure correction.

Attached link is the rigid body motion I am working on.
(https://drive.google.com/open?id=0B1...zBqTFQ5anBKMW8).

Actually my dynamic mesh setting works pretty well when the center hinge is anchored. In contrast, when the center hinge is moving as in the movie, it's very difficult to find an ideal setting for the dynamic remeshing.

I was just wondering if I could address this issue by just changing the dynamic mesh settings (e.g., smoothing, layering, remeshing).

I would appreciate any inputs!

Thank you for your help.

vasava · February 9, 2017, 04:33

Can you fix the link to your files? I can not access your files.

khhan0543 · February 9, 2017, 11:27

I've fixed the link. Thank you for letting me know that!

January 31, 2017, 16:16	Two-way FSI dynamic mesh issue	#1
khhan0543 New Member Khan Join Date: Jan 2017 Posts: 18 Rep Power: 9	Hi there, I wanted to couple transient structural with fluent, but keep having dynamic mesh issue - either 1) update-dynamic-mesh failed: negative cell volume detected or 2) divergence detected in AMG solverressure correction. Attached link is the rigid body motion I am working on. (https://drive.google.com/open?id=0B1...zBqTFQ5anBKMW8). Actually my dynamic mesh setting works pretty well when the center hinge is anchored. In contrast, when the center hinge is moving as in the movie, it's very difficult to find an ideal setting for the dynamic remeshing. I was just wondering if I could address this issue by just changing the dynamic mesh settings (e.g., smoothing, layering, remeshing). I would appreciate any inputs! Thank you for your help. Last edited by khhan0543; February 9, 2017 at 11:26. Reason: Edit the link

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February 9, 2017, 04:33		#2
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 23	Can you fix the link to your files? I can not access your files.

February 9, 2017, 11:27		#3
khhan0543 New Member Khan Join Date: Jan 2017 Posts: 18 Rep Power: 9	I've fixed the link. Thank you for letting me know that!