[Gmsh] Unstructured mesh with topological defects

[David Fernández]

Hello, I would like to create a quadrilateral unstructured mesh. For 
this, I would like to mesh a rectangular surface with some randomness, 
so each time I generate the mesh I can have a different one. This 
randomness should affect to the localization of the topological defects 
throughout the mesh, and ideally these defects should be as many as 
possible.

Can anyone help me with this? Thanks.

David.