[Gmsh] Possible bug in Gmsh!

[David Colignon]

HI,

>From the FAQ : 


Section 5: Mesh module

* 5.1 What should I do when the 2D unstructured algorithm fails?

Try one of the other 2D algorithms, e.g.:
- on the command line: gmsh -algo tri
- in the interface: Tools->Options->Mesh->2D->Isotropic algorithm (Triangle)
- in input files: Mesh.Algorithm = 3
The old 2D algorithm may disappear once all its features are
integrated in the new ones, so please don't send bug reports on the
old algorithm anymore.

* 5.2 The new 2D unstructured algorithms also fail! Then what?

Send us your geometry, and we will investigate. Please keep the
following in mind though: 2D (surface) meshes are generated by
projecting a 2D mesh in the mean plane of the surface. This gives nice
results only if the surface curvature is small enough. Otherwise you
_have_ to cut the surface in pieces. For example, using half circles
to define a cylinder will fail with the unstructured algorithm (you
should define arcs with angles smaller than Pi, and thus define the
cylinder with at least three patch surfaces).



Dave





A 15:21 20/03/2003 -0000, vous avez écrit : 
>>>>
Dear GMSH users,
  
I attach a file witch it works, less the last line. Why? The problem appear
when I try to make a 2D mesh of 
the design.
  
I don't know if is a bug or not but I will send it to can tell me what and
why I have the error.
  
Thanks. Regards.

Attachment Converted: "C:\Documents and
Settings\colignon\Bureau\.gmsh-errors" 

Attachment Converted: "C:\Documents and Settings\colignon\Bureau\bug.geo" 
_______________________________________________ 
gmsh mailing list 
gmsh at geuz.org 
http://www.geuz.org/mailman/listinfo/gmsh 

<<<<



Dave