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blockMesh for 20M grids, stuck forever? Help!

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Old   August 13, 2013, 17:41
Post blockMesh for 20M grids, stuck forever? Help!
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Hi guys,

I want to generate mesh with 20 million grid points using blockMesh. However, I tried for many times and I failed. I uses blockMesh and now it has taken for more than 5 hours, and the mesh is not successfully generated, I am still waiting..... Could you guys tell me is there a better way to generate big mesh using blockMesh? Thanks!
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Old   August 14, 2013, 02:14
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Nima Sam
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well you may want to generate your mesh with coarser mesh, then using refineHexMesh or refineMesh, to make it refine to the level you want
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Old   August 21, 2013, 11:58
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refineHexMesh can also be run in parallel, so you could make a mesh with blockMesh, decomposePar, and then refine in parallel to your desired level.
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Old   August 21, 2013, 12:36
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How much RAM memory do you got on your machine? Probably blockMesh is eating everything, and evading to some swap-memory, which makes it terribly slow. If this is the case, try running on a machine with more RAM.
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