[Gmsh] Physical Surfaces/volumes in unv format
Christophe Geuzaine
cgeuzaine at ulg.ac.be
Mon Oct 1 10:10:21 CEST 2007
Jacques Kools wrote:
> Hello Folks,
>
>
>
> I had a question regarding physical/volumes in unv format :
>
>
>
> I created a mesh in Salome (see attached file), and defined groups of
> faces ( their equivalent of physical surfaces). They are named 100, 102
> and, 103.
>
>
>
> I am not familiar with the structure of the unv files ( That structure
> seems to be one of the great mysteries of our time. It is very difficult
> to find a simple document describing the format.)
>
> However, when I look at the file, I can see these numbers appearing (
> lines 1013, 1145 and 1157) in a section starting with 2467. Now, when I
> open the file in gmsh 2.08 (windows) , I can only see one geometrical
> and one physical surface !!
>
Hi Jacques - That's "normal". Due to the large number of possible
"group"-type records in the UNV spec, Gmsh does not read any of them...
To determine the elementary/physical region tags, Gmsh simply reads the
3rd and 4th tag in each element (UNV record 2412).
Christophe
>
>
> For what it is worth : here is a discussion on the openfoam board of
> what seems to be the same problem.
> http://openfoam.cfd-online.com/forum/messages/126/5175.html?1188239030
>
>
>
> All the best,
>
>
>
> Jacques
>
>
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>
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--
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine