> On 20 Sep 2016, at 17:07, andreas.schus...@dlr.de wrote:
> 
> Hi,                                                                           
>                                                     
>  
> 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?

Weird... The "before.msh"/"after.msh" files are created for debugging purposes 
in the triangle->quad recombination algorithm, when the "-saveall" option is 
used. (This will be removed in a future version.)

What happens if you run Gmsh (without Python), directly from the command line, 
e.g.

gmsh myfile.geo -2



> Thanks in advance!
>  
> Best regards
> Andreas
>  
> ——————————————————————————
> Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
> Institut für Faserverbundleichtbau und Adaptronik |
>  
>  
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

Free software: http://gmsh.info | http://getdp.info | http://onelab.info


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