[Gmsh] Instabilities of mesh generation in interactive and batch mode of gmsh

Andreas.Schuster at dlr.de Andreas.Schuster at dlr.de
Tue Sep 20 17:07:16 CEST 2016


I'm using gmsh for creating a finite element model of a full aircraft model for structural analysis.
For that purpose, I have written a python process which writes the input geometry of the aircraft as .geo file and pass it to gmsh via a simple batch process in Python. My problem is that when I run that process in batch mode, gmsh is running and produces some files called "before.msh" or "after.msh" again and again and seems not to converge the mesh generation.
If I start the GUI of gmsh with the input geometry and start the mesh generation inside, gmsh finishes after around 4 seconds with a nice mesh!
The aircraft is mainly defined by regular 4 point areas which I recombine to get quadrilateral elements. At some places due to the local aircraft structure definition, there are some areas with 5 lines which produces some small degenerated elements.

I already tested different meshing algorithms and options directly written in the geometry input file to overcome to problem, but the batch process of gmsh doesn't finish, though.

Can anybody help me with this problem?
Thanks in advance!

Best regards

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Institut für Faserverbundleichtbau und Adaptronik |

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://onelab.info/pipermail/gmsh/attachments/20160920/90b378b1/attachment.html>

More information about the gmsh mailing list