[Gmsh] Fwd: Re: about mesh refinement by scripting
David Colignon
David.Colignon at ulg.ac.be
Wed May 12 17:58:49 CEST 2010
-------- Original Message --------
Subject: Re: [Gmsh] about mesh refinement by scripting
Date: Wed, 12 May 2010 17:46:54 +0200
From: Giuseppe Zagari <gzagari at unical.it>
To: David Colignon <David.Colignon at ulg.ac.be>
Hi David,
thank you for the reply.
Something like this:
i#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <signal.h>
#include "MySolver.h"
int main(int argc, char* argv[])
{
int i, pid;
system("gmsh -pid -listen test.geo > /tmp/gmsh.pid &");
//system("gmsh -pid -listen -2 test.geo > /tmp/gmsh.pid &");
for(i = 0; i < 5; i++)
{
system(" ??? "); // put here the command for refine
MySolver ms("test");
ms.analyze();
}
kill(pid, 9);
}
I hope I understod right.
Best Regards,
GZ
2010/5/12 David Colignon <David.Colignon at ulg.ac.be
<mailto:David.Colignon at ulg.ac.be>>
On 12/05/10 09:56, Giuseppe Zagari wrote:
Hi,
I am using gmsh gui for checking
convergence of my finite elements following this procedure:
open gmsh, open filename, go to mesh module, clicking 2D and refine
many times as I want and run the analysis.
Hi Giuseppe,
I suppose you mean that after refining, you save the mesh, perform
your FE calculations, go back to the Gmsh GUI, click on refine,
save, etc. ?
But now I would like to use it in a script like this:
gmsh -2 filename.geo
analyze filename // it use both .geo and .msh files
gmsh -refine filename.msh
analyze filename.msh
gmsh -refine filename.msh
analyze filename.msh
....
but, used in this way, gmsh change the node numbering.
yes, if you save the mesh, quit Gmsh, relaunch Gmsh,reload the mesh,
refine, save, quit, etc. like in your script above, the node
numbering will probably change.
One solution could be to launch Gmsh in "server" mode (launch Gmsh
on the command line with "gmsh -listen") and interact with it
through "sockets", like explained here (point 3):
http://www.geuz.org/gmsh/doc/texinfo/gmsh.html#Solver-module-questions
or launch your FE code from within Gmsh :
http://www.geuz.org/gmsh/doc/texinfo/gmsh.html#Solver
http://www.geuz.org/gmsh/doc/texinfo/gmsh.html#Solver-module
Regards,
Dave
--
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
Sart-Tilman B28
Université de Liège
4000 Liège - BELGIQUE
Tél: +32 (0)4 366 37 32
Fax: +32 (0)4 366 29 10
WWW: http://hpc.montefiore.ulg.ac.be/
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Please suggest me in wich way I can obtaine the same
behavoiur of the gmsh-gui.
Best Regards and Many Thanks for gmsh
Giuseppe
--
Ing. Giuseppe Zagari, Ph. D.
Dip. Modellistica per l'Ing. - UNICAL
Via P. Bucci, Cubo 39/b 87036
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