[Gmsh] unexpected behavior in Surface creation

Christophe Geuzaine cgeuzaine at ulg.ac.be
Wed Feb 6 03:55:39 CET 2013


On 05 Feb 2013, at 17:06, Manav Bhatia <bhatiamanav at gmail.com> wrote:

> Hi, 
> 
>    I am attempting to create a simple airfoil model with specified surface point locations. The script is attached. 
> 
>    The script first creates the airfoil surface as a spline, and then the outer analysis boundary. Then, the surface is specified using the outer line loop followed by the inner line loop to designate the hole. 
> 
>     The problem is that this is not creating a consistent planar surface, which leads to failure of the meshing procedure. 
> 
>     It is likely that I am making inappropriate use of one of the functions, but I am unable to figure that out. I would appreciate if someone could point it out for me.
> 

Hi Manav - You should remove the duplicate point at the trailing edge, e.g. by adding "Coherence;" after the Spline creation: see the attached file.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: naca64a010.geo
Type: application/octet-stream
Size: 5109 bytes
Desc: not available
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20130205/6e2d99aa/attachment.geo>
-------------- next part --------------

> Thanks,
> Manav
> 
> <naca64a010.geo>_______________________________________________
> gmsh mailing list
> gmsh at geuz.org
> http://www.geuz.org/mailman/listinfo/gmsh

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