On 04/08/10 20:06, Martin Vymazal wrote:
Hello,
I would like to ask if anyone has an idea how (if at all) to join two
cylindrical surfaces in gmsh. I have an 'msh' file
after conversion from CAD data. The file contains 2 pipes which have the same
axis but slightly different diameters, one
following after the other. There's a small gap between the end of the first
pipe and the beginning of the second pipe
that I'd like to cover with a surface mesh, thus joining the two pipes.
I have a circle (elementary entity number 1), which is the 'outlet ring' of the
first pipe and another circle
(elementary entity # 2) - 'inlet ring' of the second pipe. Moreover, there's a
line number 3 joining one point of the
first circle with another point on the second circle. These three lines form
sort of a 'conical outline' - I have 2
bases with slightly different radiuses and one surface line connecting them. I
thought I could write this in my geo file
(after merging the mesh with the two pipes):
l1 = newreg;
Line Loop(l1) = {1,2,3};
Ruled Surface(newreg) = {l1};
Unfortunately, gmsh meshes only the surface defined by circle 1, instead of
meshing the conical surface that I tried to
define.
Could you please tell if what I'm trying to do is feasible? If so, do you have
an idea how to do it?
Hi Martin,
I am not sure that Gmsh is able to understand the topology of the surface you want to create, especially with the line
n°3 joining the two circles... Moreover Gmsh doesn't like arc circles greater than PI ...
The best solution would be to divide each circle in two parts, and having a
second line joining the two half circles...
Regards,
Dave
Best regards,
Martin Vymazal
----------------------------------------------------------------
This message was sent using IMP, the Internet Messaging Program.
_______________________________________________
gmsh mailing list
[email protected]
http://www.geuz.org/mailman/listinfo/gmsh
_______________________________________________
gmsh mailing list
[email protected]
http://www.geuz.org/mailman/listinfo/gmsh
