[Gmsh] Background mesh

[Christophe Geuzaine]

Yves Krähenbühl - MTD wrote:

> Hi,
>  
> I would like to test your background mesh technique in 3D (tetrahedral
> mesh 1st order).
> Before I write the necessary interfaces to apply my background mesh, I
> would like to know:
>  
> - if the technique works in the case I want to get a tetrahedral mesh

Yes, but it is still (very) experimental, i.e., slow and buggy...

> - if there is an upper limit in the background mesh size to be provided

No.

> - if there are other restrictions concerning the background mesh; for
> example, does the geometrical extension of the background mesh have to
> coincide with the precise dimensions of the final mesh ?

No. If the geometrical extension of the background mesh is larger than
the actual geometry, Gmsh will simply use the part that overlaps the
geometry. If it is smaller, Gmsh will try to get the characteristic
lengths from the closest points in the background mesh.

Best,

Christophe

-- 
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org