|May 24, 2012, 02:48||
Join Date: Oct 2009
Location: Mozzate - Co - Italy
Posts: 490Rep Power: 10
I am trying to run a moving-mesh problem when I give the moveDynamicMesh command, I get this error:
Thanks a lot,
Last edited by samiam1000; May 24, 2012 at 04:04.
|May 25, 2012, 02:48||
there are these three asterisks "***" which tell you, that there's something terribly wrong. So your mesh features the following bad cells:
4786 High aspect ratio cells
34479 severly non-othogonal faces
19112 incorretly oriented faces
2542 highly skewed faces
so YES, this is most probably a problem with the mesh an you will need to increase your mesh quality!
I suppose you are using snappyHexMesh, so then it's a good start to find the problematic cells by running "checkMesh" after you created your mesh. checkMesh will create "sets" of those bad cells und you can view them in paraview/paraFoam.
A good start for snappyHexMesh is to switch off all quality controls, and then have a look at the bad cells with checkMesh and paraview. After that you may slowly try to rise the quality parameters in SHM und see how that effects your mesh.
I suggest to do that on a tiny part of your mesh, e.g. by using an appropriate blockMeshDict
|May 28, 2012, 05:59||
Join Date: May 2012
Posts: 12Rep Power: 6
May I ask where can be found "documented" examples of moving mash, to learn how to configure and deal with them ?
|May 28, 2012, 06:34||
Join Date: Mar 2009
Posts: 133Rep Power: 9
Use "moveDynamicMesh --help"
This is the best help. Also try to redo any tutorial on moveDynamicMesh.
It never gets easier You just get Better
|May 30, 2012, 08:22||
Join Date: Sep 2009
Location: Gothenburg, Sweden
Posts: 53Rep Power: 8
There are a few tutorials where you can read about the different settings for the mesh motion, i.e. here, here, here and here.
More tutorials can be found here by changing the year from 2007 to 2011.
Hope this helps
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