[Gmsh] boolean partitioning

andrew armitatz at gmail.com
Wed May 3 08:35:56 CEST 2017


This is what I came up with too. I create the geometry and import it to
gmsh as brep. The problem I have now is how to assign characteristic
lengths in individual groups (edges, surfaces). So far I haven't been able
to do that with a result that works correctly.

Kind regards
Andrew

Στις 3 Μαΐ 2017 8:20 π.μ., ο χρήστης "Bernd Hahnebach" <gmsh at b75.ch> έγραψε:

> Zitat von andrew <armitatz at gmail.com>:
>
> In Salome which uses the opencascade model there is a Boolean operation
>> called partition. With this you can create a solid from two others but
>> with
>> a shared face. A usage of that is the creation of meshes with internal
>> walls in it with zero thickness aka 'baffles'.
>>
>
> FYI
> Such a topology is called a CompSolid in OpenCascade. Since I have no
> experience with the new GMSH functionallity I normally use FreeCAD to
> create such topology and use brep (The native OpenCascade format) to
> exchange the topology with GMSH.
>
>  http://opencascade.blogspot.ch/2009/02/topology-and-geometr
> y-in-open-cascade_27.html
>
> bernd
>
>
>
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