[Gmsh] Cylinder + Box: Meshing problem

[David Colignon]

Hi Jan,

your surfaces n° 23 and 133 are superimposed. 

Surface 23 must be defined with surface 133 ( Line Loop(132) )as a hole:

Plane Surface(23) = {22,132};

Here is a corrected version of your .geo file.

Cheers,

Dave

-- 
David Colignon, Ph.D.
ELAP - Service d'Electricité Appliquée
Institut Montefiore B28
Université de Liège
4000 Liège - BELGIQUE
Tél: +32 (0)4 366 37 32
Fax: +32 (0)4 366 29 10
http://elap.montefiore.ulg.ac.be


Jan Kocbach wrote:
> I am trying to mesh a combination of a cylinder and a box (see attached 
> .geo file), but Gmsh 2.0.7 (and older versions) crashes:
> 
> 1. Assertion failed! Program: F:\gmesh2.gmesh.exe. File: tetgen.cxx. 
> Line 20163. Expression: matchflag == true (Delaunay algorithm)
> 2. Runtime error (Netgen algorithm)
> 
> I have also tried to make a geometry with many boxes of different size 
> adjacent to each other - all with different materials (i.e. they must be 
> meshed separately, and the mesh must be connected), but get similar 
> problems with the meshing. Have you got any tips, or maybe a good 
> example file other than the examples/tutorials provided?
> 
> Jan
> 
> 
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