[Gmsh] Meshing Volume within a Volume

[Aritra Bal]

Hello there,

 I am using gmsh to mesh a geometry than contains one volume(with holes) inside another volume. The mesh completes just fine, but the results in the FEM solver later on are not what I'd expect. The same geometry, when designed and meshed in COMSOL, gives me the correct results. Is there anything wrong with my code, in the way I define the volumes and/or the holes? Attaching the code, as well as screenshots of the gmsh and COMSOL mesh. (exported to gmsh format). The COMSOL mesh also looks different to the one made in gmsh.

Sincerely,
Aritra Bal,
Indian Institute of Technology, Kharagpur.
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