[Gmsh] Mesh problem with rotated volume

[Christophe Geuzaine]

svhb at telenet.be wrote:
> Hi, 
> 
> I have a simple example of an extruded volume with a hole. It works fine until I rotate the volume. When rotated, the mesh looks corrupted, the mesh stick out the volume. 
> 
> See two jpg files, and the geo file included.
> 

Hi - This is a known limitation of the "extrude" command in the old CAD
module: extruded entities cannot be safely geometrically transformed
because we use the exact extrusion formula to interpolate.

With tomorrow's nightly snapshot you will be able to set

   Geometry.ExactExtrusion=0;

This will fix your problem (at the cost of losing the exact
interpolation for curved surfaces, which is not a problem in your case).


> Thanks
> 
> 
> 
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine