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[blockMesh] blockMesh warning negative volume |
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January 13, 2015, 08:09 |
blockMesh warning negative volume
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#1 |
Member
Join Date: Dec 2012
Posts: 81
Rep Power: 13 |
Hi guys,
I try to blockMesh my geometry but I get the following warnings when doing so: FOAM Warning: From function cellModel::mag (const labelList&, const pointField&) in file meshes/meshShapes/cellModel/cellModel.c at line 128 zero or negative pyramid volume: -3.3333e+09 for face 1 FOAM Warning: From function cellModel::mag (const labelList&, const pointField&) in file blockMesh/blockMeshTopology.C at line 255 negative volume block: 0, probably defined inside out What is the reason for this? Where can I find meshes/meshShapes/cellModel/cellModel.c and blockMesh/blockMeshTopology.C? Thank you very much in advance for your help Last edited by pizzaspinate; January 13, 2015 at 08:32. Reason: already solved problem |
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January 13, 2015, 08:30 |
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#2 |
Member
Fatih Ertinaz
Join Date: Feb 2011
Location: Istanbul
Posts: 64
Rep Power: 15 |
would you share your blockMeshDict?
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January 13, 2015, 08:32 |
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#3 |
Member
Join Date: Dec 2012
Posts: 81
Rep Power: 13 |
uuupss, realised my mistake and solved the problem :-)
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April 13, 2016, 10:11 |
Negative Valumes in BlockMesh
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#4 |
New Member
Maral Mohajer
Join Date: Jan 2016
Location: Stuttgart
Posts: 18
Rep Power: 10 |
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May 15, 2016, 07:30 |
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#5 |
Senior Member
Join Date: Aug 2013
Posts: 407
Rep Power: 15 |
Hi Maral,
Check the order in which you have defined your vertices and the way you have called them while defining the hex block. As an example, assuming that you are creating a cuboid, the way I would define it is to start at the lower z value, from the bottom left point and continue in a anticlockwise way to the top left point. And then do the same for the higher z value. I have noticed that this way allows you to avoid the inside out problem. Hope this helps. Cheers, Antimony |
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