[Gmsh] Relation between surface meshes and extruded tetrahedral meshes

[Christophe Geuzaine]

Koyel Mukherjee wrote:
> Hi all
> I am new to GMSH and to this mailing list. I have used GMSH to extrude 
> an existing 2-D triangular surface mesh to a 3-D tetrahedral mesh. I was 
> wondering if there is any relation between the 2-D original mesh and the 
> 3-D generated mesh. I mean is there any kind of mapping between the two, 
> for example, is the list of triangles in the 3-D .mesh file newly 
> generated defining the surface of the 3-D model generated, or are they 
> only to be used as elements forming the tetrahedrons.

It's more complicated than that, because edges in the surface mesh might 
have to be swapped (in order for the a 3D mesh to be possible).


> Thanks a lot!
> -Koyel
> 
> 
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine