[Gmsh] bug?

[Christophe Geuzaine]

Bernhard Stoevesandt wrote:
> Hi,
> 
> well i have another problem with the mesh generator. As i try to
> generate a mesh for this simple geometry, i sometimes get elements
> intersecting my surfaces. this is not supposed to happen. how can i
> prevent it from doing this (see attachments)? i use gmsh 1.60 on linux.
> 

Hi Bernhard - It's a recurrent problem with the old isotropic algorithm, 
when some features are much smaller that the overall size of the 
geometry. Reducing the random perturbation factor (gmsh -rand xxx) might 
help.

The thing I don't understand is why the new algorithm also (silently) 
fails on this geometry. I tried to see why a couple of weeks ago, but 
couldn't. I will have another look when I get a chance.

Christophe

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