I haven’t been here in a while, and this is the first visit to the “new” website. I liked the density of the old one, but, hey! I’m old fashioned. Is anyone routinely meshing with unstruct tets and importing into Openfoam?
Thanks!
Pattim 
if you want to search for old posts in any case, you can acces (partially as the user data was half erased) here: https://old.salome-platform.org/forum
I do unstructured in 2D only (to use in snappy) but it is the same for the 3D. for 2D you can even create the geometry subdictionary automatically. for 3D with tets, i would highly recommend the following items:
- Transforming the tet mesh into poly, you have two utilities,
- one for salome (pros: multithreaded, cons: it requires some programming skills to install, it is in for older vr of salome, might need changes might not and you will need to re divide the patches after doing the polymerization) GitHub - MoiseRousseau/SALOME-Voronoi: Interface between Salome and Vorpalite for polyhedral mesh generation
- using polyDualMesh utility from OF, (pros: easy to use, cons: keep in mind if your mesh in salome has pyramids, the utility will completely fail, it is single thread)
- use the script to export meshes directly from salome to OF (instead of the classic approach of export to .unv format and using ideasToFoam utility) the script writes in native polyhedra mesh file and also it supports every kind of cell type (when .unv does not, I can not remember but i think it is also pyramids) GitHub - EastEriq/salomeToOpenFOAM: A python script that outputs a Salome mesh to OpenFOAM
best regards,
That’s correct. Pyramid cells fail to export, when using the native export routine for the UNV format. Furthermore, I also found that I have to delete edge groups, since they crash the ideasUnvToFoam converter.
The salomeToOpenFOAM script works like a charm.
Thank you both for the information! So far I have only worked with blockmesh, which seems problematic. So I have a lot to learn, I have made complex tet meshes in Salome. IIRC, one must be careful with quality of the output mesh. I am a little confused, though, aren’t all tetrahedra “pyramids” with varying skewness? (…here showing my lack of knowledge of gridding tech)
polyhedra do look good… (I’ll have to look, but I assume Salome supports well?)
https://www.symscape.com/polyhedral-tetrahedral-hexahedral-mesh-comparison