Le 8 sept. 2013 à 17:54, John Pease Moore <[email protected]> a écrit :

> Hi All,
> 
> Here is my problem:
> 
> I am importing a .step surface file representation of my geometry (a wing) 
> into GMSH. I can make an isotropic volume mesh for this case just fine. 
> However, I can't manage to generate a boundary layer mesh around the aircraft 
> surface.
> 
> I know there is a BoundaryLayer field, but this doesn't seem to work (even 
> using Delaunay). I've also tried extruding the surface mesh, but get the 
> error "Impossible to extrude entity 6 (of type 306)". The geometries I am 
> trying to extrude were originally .step surfaces.
> 

Structured boundary layer meshes are functional in 2D. We are working now on 
the 3D version. A beta release will appear somewhere in 2013.

> I've read on this list that the MMG3D algorithm currently does not support 
> holes in the 3D mesh (as would be the case for an aircraft volume grid), so 
> it seems like this would preclude using anisotropic unstructured meshes for 
> this purpose. Is this correct?
> 

MMG does support holes in the 3D mesh. 

JFR


> Does GMSH support the capability to do what I'm trying to do? If not, is 
> there an intent to include it in the future?
> 
> Any help would be greatly appreciated.
> 
> Thanks!
> 
> John
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------------------------------------------------------------------
Prof. Jean-Francois Remacle
Universite catholique de Louvain (UCL)
Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering
Institute of Mechanics, Materials and Civil Engineering (iMMC)
Center for Systems Engineering and Applied Mechanics (CESAME)
Tel : +32-10-472352 -- Mobile : +32-473-909930 

 





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