[Gmsh] Not getting a volume mesh

Wayne Christopher wayne at 4raccoons.com
Sat Mar 24 23:41:33 CET 2012


Hi Ruth,

Thanks - that fixes my volume problem.

My other problem remains, though.  I want to define geometry using a msh 
file, and then create a mesh with new surface elements, not the ones I 
am using for geometry surfaces.    Is there a way to do this?

     Wayne

On 3/23/12 2:09 PM, Ruth V. Sabariego wrote:
> Hi Wayne,
>
> You need to define the geometrical Volume:
> Volume(11) = {10};
> the Physical Volume is used just for tagging the elements and their 
> further use in a e.g. FE solver.
>
> Regards,
> Ruth
>
> --
> Dr. Ir. Ruth V. Sabariego
> University of Liege, Electrical Engineering & Computer Science,
> Applied & Computational Electromagnetics (ACE),
> phone: +32-4-3663737 - fax: +32-4-3662910 - 
> http://ace.montefiore.ulg.ac.be/
>
>
>
> On 23 Mar 2012, at 18:41, Wayne Christopher wrote:
>
>> I'm trying to mesh a volume defined by surfaces that are defined by 
>> tessellations.  I don't want the mesh to be based on the surface 
>> triangles - those are purely geometry and in most cases finer than 
>> the volume mesh that I want.
>>
>> When I run gmsh like this:
>>
>> gmsh try1.geo -3 -format msh -saveall -smooth 3 -o try1-out.gmsh
>>
>> (files attached) I do not get any tetras in the output, and it 
>> appears that the output mesh is a refinement of the input mesh.
>>
>> What am I doing wrong?  Thanks,
>>
>>    Wayne
>>
>> <try1.geo><try1-geom.gmsh><try1-out.gmsh>_______________________________________________
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