[Gmsh] 10-node tetrahedron elements

[Christophe Geuzaine]

Dear Michael,

The problem stems from the "Transfinite" meshing constraints: the automatic "Transfinite Volume" command (i.e. when the corners of the transfinite interpolation are not provided) does not guarantee that the volume and surface meshes will match - it should thus be used carefully. In your case the commands are not necessary - remove them and you will get the expected mesh. 

Christophe


> On 7 Dec 2016, at 18:36, Michael Groß <michael.gross at mb.tu-chemnitz.de> wrote:
> 
> Dear Christophe,
> 
> I need your help with an error in gmsh. 
> 
> Using 10-node tetrahedron elements for discretizing a cook-like cube (see
> attached file), I get two nodes 36 and 37, which should not exist. These
> nodes arise not in the volume elements, but in the surface elements, and
> therefore in the node vector and the node sets. 
> 
> Do you have the same error? I work with the linux versions.
> 
> With kind regards,
> 
> -- 
> Prof. Michael Groß 
> Professur Technische Mechanik/Dynamik
> Fakultät für Maschinenbau
> 
> Technische Universität Chemnitz
> Reichenhainer Straße 70 | R. W239
> 09126 Chemnitz
> Germany
> 
> www.tu-chemnitz.de
> 
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

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