View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000636 | OpenFOAM | Bug | public | 2012-08-29 04:18 | 2012-08-30 10:40 |
| Reporter | Assigned To | ||||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | no change required | ||
| Platform | Linux | OS | OpenSuse | OS Version | 11.3 |
| Summary | 0000636: Bad faces in blockMesh for an axisymmetric mesh | ||||
| Description | blockMesh generates bad faces causing checkMesh, decomposePar, and solver to fail. | ||||
| Steps To Reproduce | Attached are two meshes: one works fine, the other one does not. Mesh can be checked with paraFoam, and the bad faces are always near the axis of symmetry. | ||||
| Additional Information | I'm able to generate the mesh without problem with OpenFOAM 1.7 | ||||
| Tags | No tags attached. | ||||
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2012-08-29 04:18
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You have unassigned boundary faces in your mesh, blockMesh will assign these to a 'defaultFaces' patch: Found 5 undefined faces in mesh; adding to default patch. This patch is of type empty and this upsets the detection whether the case is parallel 2D (empty on front and back) or non-parallel 2D (wedge). |
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The face merging (removing face with 2 or less unique vertices) works on boundary faces only so you'll still need to add your axis face to a patch. You've got two choices: - either have duplicate vertices in your cell but you'll still need to add the face (4 vertices but only 2 unique ones) to a patch. See e.g. the 'axis' patch in the movingCone tutorial - or have coincident points and use standard hex connectivity and let the geometric merging in blockMesh merge them. This also still requires you to add the axis face as a patch. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2012-08-29 04:18 |
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New Issue | |
| 2012-08-29 04:18 |
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File Added: blockMeshDict.zip | |
| 2012-08-29 08:58 |
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Note Added: 0001643 | |
| 2012-08-29 15:01 |
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Note Added: 0001644 | |
| 2012-08-29 15:01 |
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Status | new => closed |
| 2012-08-29 15:01 |
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Assigned To | => user4 |
| 2012-08-29 15:01 |
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Resolution | open => no change required |
| 2012-08-30 10:40 |
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Status | closed => resolved |
