[Gmsh] Mesh problem with rotated volume
Christophe Geuzaine
cgeuzaine at ulg.ac.be
Thu Apr 16 13:42:59 CEST 2009
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