[Gmsh] terrain meshing with an sth file

Christophe Geuzaine cgeuzaine at uliege.be
Wed Mar 20 08:01:41 CET 2019

Hi Laurent,

It's doable, but since you would need to connect this discrete surface with new CAD surfaces to build a volume, it would be easier if the input mesh had a topology, i.e. if you provided the surface + the bounding curves + points for the 4 corners.

Then new surfaces and a volume could be constructed, connected to these curves/points, and all the standard meshing algorithms could be used.


> On 19 Mar 2019, at 21:54, Laurent BRICTEUX <Laurent.BRICTEUX at umons.ac.be> wrote:
> Dear all,
> Is it possible to obtain a volume mesh starting from an stl terrain surface (see attachment)? 
> I would like to make a CFD mesh consisting in a volume box for which the bottom surface is a prescribed terrain. 
> The elements should be tets only.
> Is there any example geo file that could help to solve my problem ? 
> Thank you for your help and the nice piece of soft. 
> Laurent 
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 

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