[Gmsh] Problem with surface loop

[Christophe Geuzaine]

> On 29 Jan 2019, at 09:48, Alessandro Vicini <alessandro.vicini at sitael.com> wrote:
> 
> 
> In the attached geo file gmsh does not see the surface as a closed volume (as it should be)... why? Thank you.
> 

The interactive selection algorithm did not yet support degenerated curves. You can define the volume by hand as follows:

Surface Loop(100) = Surface{:};
Volume(100) = 100;
Physical Volume("Volume", 1100) = {100};

(I've patched the algorithm in Git - the modification will be in the next release.)

> Alessandro
> 
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine