[Gmsh] transfinite volume error

Fabian f.braennstroem at gmx.de
Sun Dec 28 13:12:06 CET 2008


Hi Christophe,

Christophe Geuzaine wrote:
> Fabian wrote:
>   
>> Hi,
>>
>> I am getting  an error message for a simple room geometry:
>>
>> Info    : Meshing volume 106 (transfinite)
>> Error   : Incompatible surface 58 in transfinite volume 106
>> Error   : Cannot tetrahedralize volume with quadrangles on boundary
>> Info    : Mesh 3D complete (0.004001 s)
>> Info    : 4063 vertices 4819 elements
>>
>> Unfortunately I have not idea, what I am doing wrong using 
>> 2.2.7-cvs-20081201!? I attached the geo file.
>> Would be nice, if anyone has a suggestion, what I am doing wrong!?
>>     
>
> Hi Fabian - You didn't do anything wrong: we forgot to update the
> transfinite volume meshing algorithm to take into account the fact that
> we now allow "implicit" transfinite surfaces (when you don't specify the
> corners by hand). This should be fixed in the next nightly build.
>   
Are there any plans to use such an "implicit" approach for transfinite 
volumes as well?
Would be great (though in this case the extrude would be much better (as 
suggested))!

> We've also added shortcuts ("*") to simplify Transfinite and Recombine
> definitions: cf. attached file.
>   

Great :-)
> Thanks for the bug report!
>
> Christophe
>
> PS: wouldn't Extrude be simpler than Transfinite in this case?
>   
Yes, probably, but started to use my mind a bit too late...
>
>
>
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