[Gmsh] Problem with volume creation in 3D geometry

[Marina Tsili]

Dear David,

many thanks for your answer and the time to take a look at the geometry
file.

Now that the undefined surfaces have been located, the problem has been
solved and I was able to create the volume and the 3D mesh.

Moreover, thank you for suggesting the
'Tools->Options->Mesh-Visibility->Surface faces' trick, which will be
extremely helpful in locating errors in complex geometries.

Marina

2010/4/12 David Colignon <David.Colignon at ulg.ac.be>

> Hi Marina,
>
> Nice geometry!
>
> If you mesh your geometry in 2D and activate
> Tools->Options->Mesh-Visibility->Surface faces , you can see that the
> surfaces delimited by lines/circles 2304, 2198, 2197, 2254  and 2177, 2178,
> 2294, 2244 are not meshed ... Can you check these surfaces (and possibly
> others) that could create "holes" in the external surface ?
>
> Regards,
>
> Dave
>
> --
> David Colignon, Ph.D.
> Collaborateur Logistique du F.R.S.-FNRS
> CÉCI - Consortium des Équipements de Calcul Intensif
> ACE - Applied & Computational Electromagnetics
> Sart-Tilman B28
> Université de Liège
> 4000 Liège - BELGIQUE
> Tél: +32 (0)4 366 37 32
> Fax: +32 (0)4 366 29 10
> WWW:    http://hpc.montefiore.ulg.ac.be/
> Agenda:
> http://www.google.com/calendar/embed?src=david.colignon%40gmail.com
>
>
>
> On 11/04/10 20:59, Marina Tsili wrote:
>
>> Hello to all gmsh developers and many thanks for this flexible
>> open-source mesh creation software, expanding possibilities for finite
>> element analysis.
>>
>> I am using the latest version of gmsh software for windows, in order to
>> construct the 3D geometry of a transformer.
>>
>> I am attaching you the respective geo file (GMSH_Transformer.geo)
>> consisting of 10 volumes (elementary entities
>> 3,4,5,6,1142,1381,1621,1860,2100, corresponding to physical volumes
>> 2107,2108,2109,2110,2101,2102,2103,2104,2105 and 2106, respectively)
>> representing the cores and coils of the active part. These volumes are
>> surrounded by external surfaces consisting of curved (rounded) and
>> rectangular parts, representing the geometry of the tank with its
>> corrugated panels. Although each part of the external surfaces seems to
>> be well defined (and can be selected during the 'Elementary
>> Entitities-->Add--->New--->Volume' process), it is impossible to create
>> the volume between these outer surfaces and the rest of the volumes in
>> the considered geometry.
>>
>> Can anybody provide some hint on possible errors in the geometry
>> definition? Why, although the outer surfaces seem to create a closed
>> surface loop, it is not possible to create a volume surrounded by them?
>>
>> Many thanks in advance for your help
>> Marina Tsili
>>
>>
>>
>> _______________________________________________
>> gmsh mailing list
>> gmsh at geuz.org
>> http://www.geuz.org/mailman/listinfo/gmsh
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20100412/39af3fdf/attachment.html>