View Issue Details
ID | Project | Category | View Status | Date Submitted | Last Update |
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0001747 | OpenFOAM | Bug | public | 2015-06-15 23:20 | 2017-06-30 10:41 |
Reporter | Assigned To | chris | |||
Priority | normal | Severity | minor | Reproducibility | always |
Status | closed | Resolution | fixed | ||
Platform | GNU/Linux | OS | Ubuntu | OS Version | 14.04 |
Summary | 0001747: SnappyHexMesh creates extra cell regions | ||||
Description | SnappyHexMesh retains cell regions that do not contain the locationInMesh point. According to checkMesh there are 7 regions. At least 4 of the regions are approximatly located around the point (-4989.605469, 1333.152832, 1944.076294) See the attached mesh setup files. | ||||
Steps To Reproduce | unzip the attached small_regions.zip file and run run_snappy.sh | ||||
Tags | No tags attached. | ||||
2015-06-15 23:20
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I will look into this. What sizes does checkMesh report for these regions? Do you have one large regions and some small ones? As a workaround you can run snappyHexMesh for refinement only, run splitMeshRegions -largestOnly (this splits off the largest region as a separate mesh region), move the resulting largestOnly/polyMesh back to constant/ and restart snappyHexMesh (disable refinement) |
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Here's the checkMesh output (the 6 single cell regions have a small volume): *Number of regions: 7 The mesh has multiple regions which are not connected by any face. <<Writing region information to "0/cellToRegion" <<Writing region 0 with 18464 cells to cellSet region0 <<Writing region 1 with 1 cells to cellSet region1 <<Writing region 2 with 1 cells to cellSet region2 <<Writing region 3 with 1 cells to cellSet region3 <<Writing region 4 with 1 cells to cellSet region4 <<Writing region 5 with 1 cells to cellSet region5 <<Writing region 6 with 1 cells to cellSet region6 I'll also include an image of the small cell regions. I worked around this issue by changing the geometry. |
2015-06-16 15:08
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Reporter found workaround, provided no further feedback on original issue |
Date Modified | Username | Field | Change |
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2015-06-15 23:20 |
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New Issue | |
2015-06-15 23:20 |
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File Added: small_regions.zip | |
2015-06-16 09:17 |
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Note Added: 0004947 | |
2015-06-16 15:06 |
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Note Added: 0004957 | |
2015-06-16 15:07 |
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Note Edited: 0004957 | |
2015-06-16 15:08 |
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File Added: mesh_bug.jpg | |
2017-06-30 10:41 | chris | Assigned To | => chris |
2017-06-30 10:41 | chris | Status | new => closed |
2017-06-30 10:41 | chris | Resolution | open => fixed |
2017-06-30 10:41 | chris | Note Added: 0008293 |