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[Technical] How to convert Corner-grid format to OpenFOAM mesh

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Old   April 20, 2019, 13:05
Exclamation How to convert Corner-grid format to OpenFOAM mesh
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Elwardi Fadeli
Join Date: Dec 2016
Location: Boumerdes, Algeria
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Hello all,

So, I have to convert a corner grid to OpenFOAM mesh. The big problem is that the grid allows for two adjacent cells to share a "portion of a face" but the mesh classes in OpenFOAM (fvMesh in particular) doesn't like this.

Does anyone know a quick way to convert it? Provided that there is some C library which, apparently, can read in the grid; which means I can easily retrieve the points cloud and their connectivity (to some extent).

This particularly leads to the ability of writing an invalid "blockMeshDict" where some cells are described like this:

Code:
+-----------------+
|                 |
|                 |
|                 +----------------+
|                 |                |
+-----------------+                |
                  |                |
                  |                |
                  +----------------+
But I'm not sure about where to go from there


Note that trying to extract the surface mesh from the grid and re-meshing it with tools like "cfMesh" didn't work, obviously because of the same issue :

"Bounding box (0 0 -20) (7000 7000 0)"

Thanks in advance.
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