[Gmsh] Defective mesh file

Mikhail Titov mlt at gmx.us
Thu May 27 08:51:50 CEST 2010

I didn’t use medit mesh, but did you use physical entities or default
elementary entities in your geometry description?  By default, when
generating mesh from simple geometry with elementary entities you get all
your points from the model as their own point-type elements. Use physical
surface (or whatever physical). Only participating nodes will go into mesh
file in this case.




From: gmsh-bounces at ace20.montefiore.ulg.ac.be
[mailto:gmsh-bounces at ace20.montefiore.ulg.ac.be] On Behalf Of Felix Salazar
Sent: Tuesday, May 25, 2010 6:21 PM
To: gmsh at geuz.org
Subject: [Gmsh] Defective mesh file


I am using Gmsh to create a mesh for a finite element solution. However, I
am getting an error, because in the generated mesh (a medit .mesh file),
there are vertices that are not assigned to any elements in the element
connectivity list. In other words, the mesh file have nodes which does not
contain any unknown in the FEM solution. The problematic node is the origin
(0,0,0), and it is repeated at least two times. There's any way to correct
this mesh without writing a script to eliminate the phantom nodes, and
modify the connectivity list (the number of all nodes will change, so it
would be necessary to modify several hundreds of thousand of elements).

Félix Salazar

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