> Does OpenFOAM read Gmsh mesh files? It does ship a gmshToFoam command-line utility. > > -----from OpenFOAM > > Starting to read mesh format at line 2 > > Read format version 4 ascii 0 I suspect this is the problem. I don't know whether gmshToFoam understands MSH4. In which case the short-term suggested remedy is to export in legacy MSH2 from Gmsh.