[Gmsh] Strange mesh on transfinite 3-sided surface

[Alexander Tismer]

Hi,

I try to mesh a 3-sided surface. The surface is a ruled surface out of 3 
BSplines.
If I mesh it with 10 points on each transfinite line then it works nice. 
Increasing to 11 points on each line produces a strange mesh. Please 
find attached the geo file and 2 pictures.

Is this a bug?

Best regards
Alex

-- 
Alexander Tismer

Institut für Strömungsmechanik
und Hydraulische Strömungsmaschinen
Universität Stuttgart
Pfaffenwaldring 10
70550 Stuttgart

Tel.:   +49 (0) 711 / 685 63007
Fax:    +49 (0) 711 / 685 63255
eMail: alexander.tismer at ihs.uni-stuttgart.de
http://www.ihs.uni-stuttgart.de

-------------- next part --------------
A non-text attachment was scrubbed...
Name: untitled.geo
Type: application/octet-stream
Size: 515 bytes
Desc: not available
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20140430/a23ee887/attachment.geo>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: surf_11.png
Type: image/png
Size: 192964 bytes
Desc: not available
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20140430/a23ee887/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: surf_10.png
Type: image/png
Size: 222928 bytes
Desc: not available
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20140430/a23ee887/attachment-0001.png>