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blockMesh being killed automatically

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Old   September 16, 2015, 13:52
Unhappy blockMesh being killed automatically
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Jess
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Hello. I have been trying to create a simulation of semi-submersible platform but as it has 62 blocks, I decided to start trying to simulate just the bottom part first, which has 24 blocks. The problem is that when I use the command blockMesh, my mesh starts being generated and right after the 24 blocks get created it shoes a message saying "killed" and it stops. I thought it was a problem with my computer, so I tried to run it in other two computers, the same problem occurred. Anyone knows what the problem can be?


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Old   August 11, 2016, 15:24
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Thomas Oliveira
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Insufficient memory may be the reason why blockMesh is being killed, as explained on this post.

I needed to generate a mesh for a rectangular cuboidal domain divided into smaller identical rectangular cuboids. For this specific type of mesh, I have written a C++ program that creates the same files that would be created by blockMesh.
It is available here in case it can be useful to other people.

Using this code, I was able to generate a 500x500x500 mesh that I couldn't generate using blockMesh on my computer with 64 GB RAM. It takes 70% more time than the OpenFOAM's blockMesh, but requires 40% less memory.

[EDIT: a new version is available on the same link. Now it takes 24% more time than the OpenFOAM's blockMesh, but requires at most 80 MB, independently of the mesh size.]

Best wishes,
Thomas

Last edited by t.oliveira; August 12, 2016 at 13:17.
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