[Gmsh] unusable mesh for small "Characteristic Length"

[Jean-François Remacle]

In gmsh, it is possible to mesh multiple volumes in a non manifold way. Yet, the last volume
that is the sum of the 2 other volumes cannot be meshed ...

Moreover, some model edges are doubled on the common face. I was able to correct
the file and things are going well

I removed your 3 volumes and have added

Coherence; // This removes the duplicates
Surface Loop(48) = {47, 42, 45, 43, 44, 46};
Volume(49) = {48};
Surface Loop(50) = {46, 19, 23, 22, 20, 21};
Volume(51) = {50};


JF Remacle.

Le 3 déc. 2012 à 12:28, Winfried Boxleitner a écrit :

> hello,
> 
> for small mesh sizes the attached geo-file produces a "chaotic" mesh,
> i.e. the elements intersect, there is no defined outer surface spanned
> by element faces etc.
> 
> if the "Characteristic Length" parameter for the mesh size is >= the
> shorter length of the cuboid, all seems ok. however if I want a finer
> mesh, the result of the meshing process is unusable, as described above.
> 
> I tested the script with:
>  gmsh 2.6.2-svn (Build date: 20121120)
>  gmsh 2.6.2-svn (Build date: 20121130)
>  gmsh 2.6.2 (rev. 13442 (Build date: 20121003)
> all gave the same result.
> 
> perhaps someone can tell what is wrong with the script?
> 
> thanks
> winfried
> 
> <test_2_cuboid_chaotic.geo>_______________________________________________
> gmsh mailing list
> gmsh at geuz.org
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------------------------------------------------------------------
Prof. Jean-Francois Remacle
Universite catholique de Louvain (UCL)
Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering
Institute of Mechanics, Materials and Civil Engineering (iMMC)
Center for Systems Engineering and Applied Mechanics (CESAME)
Tel : +32-10-472352 -- Mobile : +32-473-909930 

 





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