[Gmsh] Mesh

[Christophe Geuzaine]

Guilherme Lopes wrote:
> Hi,
>  
>   I'd like to mesh a 3d domain usign GMSH, but I'd like to specify some 
> points  from its inside where I want to have a node. To compare the 
> results with the results obtained with another mesh generator. Is it 
> possible?

No, unless the points are the boundary of curves, being themselves
boundaries of surfaces, themselves boundaries of a volume. (cf.
http://geuz.org/gmsh/doc/texinfo/gmsh_fot.html#FOOT1)

>  
> Another question:
>  
> I have a FEM solver that uses edges inside the domain. I've just got the 
> boundary edges using gmsh. How should I read this information from the 
> tetrahedrons obtained in the mesh? Is there another way to do this?
>  

Gmsh saves the nodes and the elements. You'll have to create any other
entities in your own code.

>  
> Thanks in advance.
>  
>                                                       Guilherme Lopes
> 
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-- 
Christophe Geuzaine
Assistant Professor, Case Western Reserve University, Mathematics
http://www.case.edu/artsci/math/geuzaine