[Gmsh] Surface Loops

[Antoine Dechaume]

Hi Juan,

your version of gmsh is quite old, you should give a try to a recent  
one.

Antoine.


On 2-Oct-08, at 12:52 PM, John Doe wrote:

> I ended up drawing the volume in the gui and it still crash, but now
> for a different reason.
>
> If I have the 8 corners of the box 1e-5 apart with a 5-e7
> characteristic length the mesher crashes.
>
> If I have the 8 corners of the box 1 apart with a 0.05 characteristic
> length the mesher works.
>
> This is gmsh 2.0.8 packaged for Ubuntu for a amd64 machine.
>
> Is there a way to make this work without crashing?
>
> Regards,
>
> Juan
>
> On Thu, Oct 2, 2008 at 12:56 PM, John Doe <ufnoise at gmail.com> wrote:
>> I am learning to use gmsh, and I'd like to create a volume from the 6
>> surfaces of a box.
>>
>> Right now gmsh is aborting, and I think that it may be because I  
>> don't
>> understand how to order the indices in the surface loop command.  How
>> are the surfaces supposed to be oriented, and when do I use a  
>> negative
>> index?  At the end of this email are the errors I am  getting.
>>
>> Thank you,
>>
>> Juan
>>
>> Info    : Meshing 2D...
>> Info    : Meshing surface 1 (Plane, MeshAdapt+Delaunay)
>> Info    : Meshing surface 2 (Plane, MeshAdapt+Delaunay)
>> Info    : Meshing surface 3 (Plane, MeshAdapt+Delaunay)
>> Info    : Meshing surface 4 (Plane, MeshAdapt+Delaunay)
>> Info    : Meshing surface 5 (Plane, MeshAdapt+Delaunay)
>> Info    : Meshing surface 6 (Plane, MeshAdapt+Delaunay)
>> Info    : Mesh 2D complete (1.28808 s)
>> Info    : Mesh
>> Info    : Meshing 3D...
>> Info    : Meshing volume 1 (Netgen)
>> Info    : Region 1 Face 1, 0 intersect
>> Info    : Region 1 Face 3, 0 intersect
>> Info    : Region 1 Face 5, 0 intersect
>> Info    : Region 1 Face 6, 0 intersect
>> Info    : Region 1 Face 4, 0 intersect
>> Info    : Region 1 Face 2, 0 intersect
>> Info    : CalcLocalH: 2638 Points 0 Elements 4840 Surface Elements
>> Info    : Check subdomain 1 / 1
>> Info    : 4840 open elements
>> Fatal   : ERROR: Edge 1 - 9 multiple times in surface mesh
>>
>
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