Le 11 juil. 2013 à 22:57, Christophe Geuzaine <[email protected]> a écrit :
> > Hi Matthias, > > There are two separate problems: > > 1) Currently MMG3D does not like having internal surfaces in the volume. > Attached is a file with a single volume, which works ok. > > @JF : have you tried MMG3D in such cases with internal surfaces? > Not done … it seems complicated > 2) "h2 / 100" pushes the initial tetrahedralization to the limit; h2/90 works > fine over here. > > All of this is still very experimental, though. It all needs to be tested and > documented. > > Thanks for the feedback! > > Christophe > > <layers.geo> > > On 11 Jul 2013, at 17:29, "Zenker, Dr. Matthias" > <[email protected]> wrote: > >> I forgot to say that the crash happens under Windows 7 with gmsh 2.8.0 64bit >> and with 2.7.1 32bit and 64bit. >> >> Matthias >> >> _____________________________________________ >> Von: Zenker, Dr. Matthias >> Gesendet: Donnerstag, 11. Juli 2013 16:57 >> An: '[email protected]' >> Cc: 'Christophe Geuzaine [[email protected]] ([email protected])' >> Betreff: crash on 3D meshing (AW: Anisiotropic mesh in stacked layers) >> >> >> Hi, >> >> now that I have successfully created a anisotropic mesh width field for my >> geometry, I get a crash when I do the 3D meshing. 2D meshing works without >> problem. I have the impression that the desired mesh width may be too small. >> Is this so, and what is the smallest mesh width gmsh can cope with? >> >> Thanks for an answer, this time… >> >> Matthias >> >> < Datei: layers.geo >> >> _____________________________________________ >> Von: Zenker, Dr. Matthias >> Gesendet: Donnerstag, 11. Juli 2013 16:41 >> An: '[email protected]' >> Cc: 'Christophe Geuzaine [[email protected]] ([email protected])' >> Betreff: AW: Anisiotropic mesh in stacked layers >> >> >> Hi again, >> >> I have got it to work, but I still don’t understand why. It seems that the >> fields in MathEvalAniso have to be 1/(mesh_width)^2. But why? >> I have read the relevant part of the gmsh manual, but didn’t find the answer >> there. >> A short explanation and/or a pointer to more info would be highly >> appreciated. >> >> Matthias >> >> _____________________________________________ >> Von: Zenker, Dr. Matthias >> Gesendet: Mittwoch, 10. Juli 2013 17:09 >> An: [email protected] >> Cc: Christophe Geuzaine [[email protected]] ([email protected]) >> Betreff: Anisiotropic mesh in stacked layers >> >> >> Hi, >> >> I want to mesh a geometry with layers stacked in z direction, where each >> layer should have a mesh width in the xy plane, and a different one in z >> direction. I have tried to combine the Box, Min and MathEval Aniso fields to >> achieve this (see attachment). But the mesh widths are not as I expect, in >> particular in layer 2 in z direction it should be 1/20 its height. What do I >> do wrong? >> How is the mesh width derived from the m11, m22 and m33 fields in >> MathEvalAniso? >> >> Thanks for some explanations and hints, >> >> Matthias >> >> < Datei: layers.geo >> >> >> >> >> _____________________________________________________________________ >> ERBE Elektromedizin GmbH >> Firmensitz: 72072 Tuebingen >> Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede >> Registergericht: Stuttgart HRB 380137 >> >> <layers.geo> > > -- > Prof. Christophe Geuzaine > University of Liege, Electrical Engineering and Computer Science > http://www.montefiore.ulg.ac.be/~geuzaine > > > ------------------------------------------------------------------ Prof. Jean-Francois Remacle Universite catholique de Louvain (UCL) Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering Institute of Mechanics, Materials and Civil Engineering (iMMC) Center for Systems Engineering and Applied Mechanics (CESAME) Tel : +32-10-472352 -- Mobile : +32-473-909930
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