[Gmsh] Extrude for unstructured mesh

[Mikhail Artemyev]

Stephan,

I just looked them up in the graphical window. You can always check the 
indices of the geometrical entities using 
Options->Geometry->Visibility->... (see the attached figure).

Best,
Mikhail

On 02/29/2016 10:29 AM, Stephan Gekle wrote:
> Dear Mikhail,
>
> great, your solution works. Thanks a lot.
> The reason why it did not work for me, is that I did not (and in fact 
> still don't) know how extrude determines the id's of the outer 
> surfaces. I tried to look it up in the manual: 
> http://www.manpagez.com/info/gmsh/gmsh-2.2.6/gmsh_36.php
> But it does not seem to be described there.
>
> How did you know that the relevant numbers were: 13, 25, 37, 49, 10, 
> 22, 34, 46 ?
>
> Thanks again,
>
>   Stephan
>
> Am 29.02.16 um 16:20 schrieb Mikhail Artemyev:
>> Hi Stephan,
>>
>> I selected the outer surfaces as "Physical Surfaces", and it seems to 
>> work for me. Please, add this line at the end of your file and see if 
>> it works for you as well (as you know, you can replace 101 with 
>> whatever number you want to describe the outer surfaces).
>>
>> Physical Surface(101) = { 13, 25, 37, 49, 10, 22, 34, 46 };
>>
>> Best,
>> Mikhail
>>
>> On 02/29/2016 05:00 AM, gmsh-request at ace20.montefiore.ulg.ac.be wrote:
>>> Dear all,
>>>
>>> I have created a script which meshes an axisymmetric surface by
>>> extrusion (see attachment). Then the mesh contains both the outer
>>> surface of revolution as well as the four inner auxiliary surfaces 
>>> which
>>> were used/created by the extrusion.
>>> In the final mesh, I would like to have only the outer surface of
>>> revolution. I have tried to either delete the inner surfaces or to
>>> select only the outer surfaces as "Physical Surfaces". Both attempts
>>> have failed.
>>> Would someone have a hint how to go about that?
>>>
>>> Thanks a lot in advance!
>>>
>>>      Stephan
>>
>

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