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Failed checkMesh - ICEM converted mesh
Hi, I just converted my mesh (created on ICEM) however when I run the checkMesh command, it results in:
Checking geometry... 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. End Why has it failed? And what can be done to resolve this? Any help is really appreciated, Ele |
Simple Solution
Quote:
"Try to increase the number of cells or reduce the grading" to avoid aspect ratio error. -- KANNAN |
Hi,
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. good luck. |
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