[Gmsh] Different mesh size for different volumes

[jeremy theler]

Hi Bernd!


Gmsh can assign a characteristic mesh length to nodes. If from FreeCAD you
can identify the number of the nodes that surround the solids (or faces)
then you can assign them different lengths. For the heat sink example,
nodes 1-8 correspond to the outer box. So you can do:

Merge "heat_sink.brep";

For n In {1:8}
  Characteristic Length { n } = 50;
EndFor

For n In {9:97}
  Characteristic Length { n } = 5;
EndFor


Does that work for you?

--
jeremy


On Sat, Jul 30, 2016 at 1:41 PM Bernd Hahnebach <gmsh at b75.ch> wrote:

> I use CompSolids to make volume meshes which are glued together on
> faces. I was wondering if it is possible to use different mesh sizes
> for the solids (volumes) the CompSolid is made off. Find an brep
> example in an post on FreeCAD forum. Remove .txt
>
> http://forum.freecadweb.org/viewtopic.php?f=18&t=16750&p=132256#p132256
>
> cheers bernd
>
>
>
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[image: nodes.png]
[image: heat_sink.png]
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