I am new to Gmsh and trying to reproduce the following but still seeing
triangles on the surface.
Can I check that when it mentions sphere demo it is talking about
sphere-discrete.geo
// merge a surface mesh (any format will work: .msh, .unv, etc.)
Merge "sphere-surf.stl";
// add a geometrical volume
Surface Loop(1) = {1};
Volume(1) = {1};
Physical Volume('tets') = {2};
// use this to force a coarse mesh inside
//Mesh.CharacteristicLengthExtendFromBoundary = 0;
//Mesh.CharacteristicLengthMax = 0.5;
I have also tried
Physical Volume('tets') = {1};
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Mark Starnes mark.starnes at fttech.co.uk
Tue May 1 10:42:09 CEST 2012
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Hi Bartek,
Yes: use a Physical Group definition in your .geo
file, like this:
Physical Volume('tets') = {2};
where `2' in this case would be the volume number
assigned to your tetrahedra and 'tets' is a name I
made up.
Adding a `Physical Group' definition results in
only the groups specified as being physical being
exported.
Search for, `Physical' in the manual:
http://www.geuz.org/gmsh/doc/texinfo/gmsh.html
Best regards,
Mark.
On Tue, May 01, 2012 at 09:15:31AM +0200, Bartek Grychtol wrote:
> Hi,
>
> I'm new to gmsh, just seeing if it can do what I need.
> I have a surface mesh in an stl file. I need to create a nice
> tetrahedral volume mesh,
> but without changing anything on the surface.
> The sphere demo does exactly that.
> However, the generated .msh file contains both triangles (for the
> surface) and
> tetrahedra (for the volume inside).
> Is there a way (a command or file format) to have the complete mesh
> represented as tetrahedra only?
>
> Best wishes,
>
> Bartek
>
> _______________________________________________
> gmsh mailing list
> gmsh at geuz.org
> http://www.geuz.org/mailman/listinfo/gmsh
--
Dr. Mark Starnes
Principal Physicist
FT Technologies
Church Lane
Teddington
TW11 8PA
web: www.fttech.co.uk
DDI: 0208 614 2730
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