[Gmsh] Hole in a plate

Christophe Geuzaine cgeuzaine at ulg.ac.be
Mon Oct 1 09:53:21 CEST 2007

Todd Martin wrote:
> Hi
> I'm trying to mesh an IGES surface with a hole in it. Unfortunately the hole
> is represented by many small line segments and gmsh tries to divide each line
> segment into two even smaller elements when I apply a 2D mesh, no matter what
> characteristic length I choose. Is there some way to prevent this?

Hi Todd - No: the 1D meshing algorithm always includes the begin/end 
point of curves in the mesh. You should export the hole as a spline 
curve instead.

> I've tried changing the "Transfinite->Line" number of points, but it doesn't
>  seem to make any difference. Is this because the hole is not on a flat
>  surface?
> I'm using the CVS source from 27 September.
> Thanks,
> Todd.
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science