[Gmsh] independent meshing of assembly parts

[Christophe Geuzaine]

On 01/06/10 13:28, Steffè Walter wrote:
> Hello
>
> I would like to know if it is possible to use gmsh in the following way:
>
> Let us suppose that I have a collection of brep files describing a set
> of opencacscade solids.
>
> These parts have been imprinted all together so that adjiacent solids
> reuse the same faces.
>
> I would like to generate a surface mesh of each solid in an independent run.
>
> May I expert that the geometrical congruence of adjiacent entities will
> be preserved in the mesh.
>

Hi Walter - Yes, provided that you mesh all the parts together.

> I know that gmsh converts the opencascade geometery in an internal
> geometry before meshing.

No: Gmsh does *not* convert the geometry to an internal format. Gmsh 
directly accesses the underlying opencascade CAD representation.

>
> Is it a safe to assume that if two opencascade edges (faces) are equal
> they are converted in identical gmsh edges (faces)

Not if you mesh the entities separately, because the meshing algorithms 
are randomized.

>
> and then in two equal 1D (2D) meshes even in two separate runs ?
>
> Thanks
>
> walter
>
>
>
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine