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[Gmsh] Convert pure Tetrahedra Mesh to pure Hexahedra Mesh (e.g. by splitting)

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Old   June 16, 2020, 03:23
Default Convert pure Tetrahedra Mesh to pure Hexahedra Mesh (e.g. by splitting)
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Dear Foamers,

actually, I am looking for an easy way to make unstructured meshes usable with dynamicMeshRefinement which unfortunately only works with pure hexahedra meshes.
I have access to a quite good meshing tool which has many benefits but is not able to produce a pure hexahedra-mesh, but it is able to produce a pure tetrahedra mesh.

Therefore, my idea was to load this pure tetrahedra mesh into gmsh and use the function "split to hexahedra", but I don’t know any conversion tool like FoamMeshToGmsh. After some efforts with google I noticed, that only GmshToFoam does exist. Does anybody have an idea how to convert a pure tetra-mesh into a pure hexahedra-mesh by simple spitting the cells? Obviously, the resulting mesh will be finer but that is OK for me.

Thanks for any contribution,
K.C.
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