Singularity cylinder mesh in OpenFOAM

Hywoo · October 16, 2024, 15:33

Hi Foamers,

I have found that OpenFOAM can handle meshes with a singularity at the center of a cylinder(Attachment). It appears that this type of mesh contains a singularity at the pole. Could anyone explain how OpenFOAM handles such meshes?

Thanks,
Hywoo

Tobermory · October 18, 2024, 14:01

By "singularity", I assume you are referring to the fact that all a large number of cells share a common vertex on the centreline of the cylinder? (it's not a common use of the term singularity, but I guess I can see what you mean).

As for OpenFOAM - it simply doesn't care. The FV cells communicate with each other through their shared faces ... and don't care about their vertices. Hope that helps.

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October 18, 2024, 14:01		#2
Tobermory Senior Member Join Date: Apr 2020 Location: UK Posts: 747 Rep Power: 14	By "singularity", I assume you are referring to the fact that all a large number of cells share a common vertex on the centreline of the cylinder? (it's not a common use of the term singularity, but I guess I can see what you mean). As for OpenFOAM - it simply doesn't care. The FV cells communicate with each other through their shared faces ... and don't care about their vertices. Hope that helps.