[Gmsh] Create a structured-unstructured mesh using the API

[Alexander Tismer]

Hello,

I try to generate an unstructured volume mesh. The region is bounded by 
some faces that are meshed with triangles and some that are meshed with 
quadrangles (transfinite). I do that in the API by setting

 > myModel->getFaceByTag(1)->meshAttributes.method = MESH_TRANSFINITE;
 > myModel->getFaceByTag(1)->meshAttributes.recombine = 1;

for the transfinite faces. Face meshing works well, but volume meshing 
fails with

 > Found two segments intersect each other.

I figured out that there are several meshAttributes.QuadTri options in 
gmshDefines.h

 > NO_QUADTRI
 > QUADTRI_ADDVERTS_1
 > QUADTRI_ADDVERTS_1_RECOMB
 > QUADTRI_NOVERTS_1
 > QUADTRI_NOVERTS_1_RECOMB
 > TRANSFINITE_QUADTRI_1

What is the correct option for QuadTri in my case?

Is it necessary to set additional options to my transfinite faces or 
unstructured faces?

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