[Gmsh] .msh file problems

[David Colignon]

Javier Piñeiro wrote:

> Dear All
> 
> I am currently working on my MSc Thesis at Cranfield University (UK) 
> about Open Source and CFD, and Gmsh is one of the software packages I am 
> evaluating.
> 
> My problem is that the startpoint for the comparartive is a mesh 
> developed in Gambit. It is a quite big file, with around 500000 cells 
> and 34 Mb. The format file is .msh, but Gmsh is not able to open it 
> (even though it opens .msh).


Hi Javier,

I suppose Gambit and Gmsh use .msh as an extension for mesh file, but it doesn't mean that the format of the files is 
the same (open both with a text editor to see the differences). I am not aware that Gmsh is able to open Gambit mesh 
files... Gmsh has its own format for mesh files: http://www.geuz.org/gmsh/doc/texinfo/gmsh-full.html#SEC56


> Does anyone know what the problem might be? Is there a way to convert 
> the file to something readible by Gmsh, if possible in open source? 


Gmsh can also import and export meshes in  I-deas UNV, Nastran
BDF, STL, Medit MESH and VRML 1.0 files format


Is
> the size of the file or the number of cells a limitation
> 
> I also tried to do the mesh from scratch on Gmsh, including the 
> geometry. I got a mesh but if I try to refine it the program crashes. 


Can you send us your .geo file ?


Cheers,

Dave

-- 
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
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Université de Liège
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> Changing the options in the characteristic length does not have any 
> effect, it generates exactly the same mesh. Does anyone know something 
> about this?
> 
> 
> Thank you in advanced for your help
> 
>  
> 
> Kind regards
> 
>  
> 
> Javier Pineiro 
> 
> 
> 
> -- 
> Javier Piñeiro Pérez
> 
> 
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