|November 27, 2013, 07:32||
Failed checkMesh - ICEM converted mesh
Join Date: Nov 2013
Posts: 15Rep Power: 4
Hi, I just converted my mesh (created on ICEM) however when I run the checkMesh command, it results in:
Overall domain bounding box (-11996.5928 -12000 -399.9727429) (20000 12000 399.9727429)
Mesh (non-empty, non-wedge) directions (1 1 0)
Mesh (non-empty) directions (1 1 0)
All edges aligned with or perpendicular to non-empty directions.
Boundary openness (-4.626143897e-18 -4.831227775e-18 -5.071408981e-19) OK.
***High aspect ratio cells found, Max aspect ratio: 11533.97369, number of cells 25089
<<Writing 25089 cells with high aspect ratio to set highAspectRatioCells
Minimum face area = 1.243221387e-05. Maximum face area = 303119.0509. Face area magnitudes OK.
Min volume = 0.009945093367. Max volume = 65443544.43. Total volume = 5.648098245e+11. Cell volumes OK.
Mesh non-orthogonality Max: 86.68018587 average: 9.268946233
*Number of severely non-orthogonal faces: 267.
Non-orthogonality check OK.
<<Writing 267 non-orthogonal faces to set nonOrthoFaces
Face pyramids OK.
Max skewness = 0.9275708721 OK.
Coupled point location match (average 0) OK.
Failed 1 mesh checks.
Why has it failed? And what can be done to resolve this?
Any help is really appreciated,
|November 27, 2013, 08:44||
B T KANNAN
Join Date: Jul 2011
Location: CHENNAI (MADRAS), INDIA
Posts: 54Rep Power: 7
"Try to increase the number of cells or reduce the grading" to avoid aspect ratio error.
|December 11, 2013, 03:53||
Join Date: Dec 2010
Posts: 63Rep Power: 8
After the checkMesh, you could use foamToVTK utility to visualize all the non ortho faces and the high aspect ratio cells in paraview. In your case, run the command foamToVTK -faceSet highAspectRatioCells and this will create a VTK folder (which has the .VTK file) in your case directory which can then be visualized in paraview to see the cells containing high aspect ratio and you could rework/correct your geometry in ICEM if you want.(atleast you would know where the bad cells are!). You can repeat this for the non ortho faces as well.
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