Have you tryed gmsh -algo bamg ? Le 14 janv. 2011 à 15:43, Steffè Walter a écrit :
> Hello > > I have just seen about the possibility of specifying a boundary layer as a > special type of Field. > So I have started to experiment with it in order to compress the boundary > triangles towards contour normal. > The BoundaryLayer is based on an Attractor which refers to all the edges in > my miodel. > I have specified: > blayer->options[“hwall_t”]->numericalValue(meshsize); > blayer->options[“hwall_n”]->numericalValue(meshsize/1.5); > blayer->options[“hfar”]->numericalValue(meshsize); > CTX::instance()->mesh.anisoMax=2; > CTX::instance()->mesh.smoothratio=1.05; > > Unfortunately I can not get the kind of mesh I am looking for. > The mesh is influenced by these parameters but it never becomes really > anisotropic. > > I have also looked inside the BoundaryLayerField code to understand how the > metric is generated. > To me it is quite obscure the mechanism for retrieving the edge tangent. > std::pair<AttractorInfo,SPoint3> pp=cc->getAttractorInfo(); > GEdge *e=GModel:current()->getEdgeByTag(pp.first.ent): > is it the edge which is closer to the given point (x,y,z) or is just the > first edge in the Attractor EdgeList ? > > The edge tangent is used to define the direction of hwall_t and should be > related with the nearest edge. > > May you please give me a hint on the way to follow in order to define a > metric that is able to strech the boundary > triangles in the contour direction or, which is the same, to compress them in > the normal direction. > > > Thanks in advance > Walter Steffè > > > > > > > > > _______________________________________________ > gmsh mailing list > [email protected] > http://www.geuz.org/mailman/listinfo/gmsh ------------------------------------------------------------------ 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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