[Gmsh] 3D meshing

[Christophe Geuzaine]

Gagliardini wrote:
> Dear all,
> 
> 
> I have to mesh a geophysical object defined by its upper and lower 
> surfaces (a z=f(x,y) function that can be set on a regular grid). The 4 
> vertical faces are plane surfaces (a kind of shoes box with not flat  
> upper and lower surfaces).
> 
> I have read in the gmsh mailing list that only 5 or 6 faces volume can 
> be meshed using gmsh. Is this still true ?

Only if you want to use the Transfinite (structured) algorithm. The 
other algorithms can mesh arbitrary volumes.

> If gmsh is not able to mesh volume with more than 6 faces, do you know 
> an other mesher that can do that ?
> 
> 
> I have tried a small script to mesh my shoes box (attached). All the 
> surfaces are meshed but no volume element are created.
> 
> 
> What I'm doing wrong ?
> 

The "side" surfaces are not defined correctly (there are overlapping 
lines, and the volume is not closed). I've attached a small example 
derived from your geometry to show you how it can be done.

Take care,

Christophe

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