[Gmsh] Need quick help in generating a 3D tetrahedral mesh of a cylinder (bug?)

[Christophe Geuzaine]

Toshiro K. Ohsumi wrote:
> Hello,
> 
>    I am using the latest gmsh, but it seems not to be able to generate a 3D
> mesh given the attached cyl.geo file.  I am creating the top and bottom 
> circles (line loops 40 and 41) and the 4 panels make up the sides (the rest of
> the line loops), I turn them into ruled surfaces then physical surfaces, then
> volume, then physical volume.  I do not see why this does not work.  (What am I
> doing wrong?)  Gmsh just keeps printint out Info : Relaxation factor = ... 
> followed by some message about coplanar points (but shouldn't the surfaces 
> contain coplanar points?).  Is this a bug?
> 
>    I am doing it this way since I need to be able to specify boundary conditions
> on the ends of the cylinder as well as on the outer [curved] wall.  
> 
>    I need to generate this soon (within a day or so), so any help would be 
> greatly appreciated.  Many thanks,
> 

The surfaces are not defined correctly. To avoid such errors, you can 
create them interactively using the GUI (see the attached file).

Christophe

-- 
Christophe Geuzaine

Tel: (626) 395-4552    http://www.geuz.org
Fax: (626) 578-0124    mailto:geuzaine at acm.caltech.edu
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