> On 13 Jul 2018, at 16:46, Octavio Castillo Reyes <ocastillore...@gmail.com> > wrote: > > Dear all, > > I'm writing to you because I need some tips/advices for mesh refinement. > Given a simple model like the one attached to this mail, If the spacing for > material 1 is d1 = 300 m, and for material 2 it is d2 = 220 m. How to define > the spacing for points p1, p2, p3, p4, p5, p6? How to refine near points p7, > p8, ...., p14? For these points, I want a refinement equal to d1/20 and that > extends up to 80 m from each point. > > I have already done experiments but it is not clear to me how to handle the > attractor option, namely I don't know if following lines are correct: > > d1 = 300; > d2 = 220; > > Field[1] = Attractor; > Field[1].NodesList = {7:14}; > Field[2] = Threshold; > Field[2].IField = 1; > Field[2].LcMin = d1/20; > Field[2].LcMax = ds; > Field[2].DistMin = d1/20; > Field[2].DistMax = 80; > Field[3] = Min; > Field[3].FieldsList = {2}; > Background Field = 3;
Looks ok (the Min field is not necessary) ; it will work both in 2D and 3D. Also make sure to add Mesh.CharacteristicLengthExtendFromBoundary = 0 so that this automatic interpolation is not applied. CG > > Characteristic Length {1, 2, 3, 6} = d1; > Characteristic Length {4, 5} = d2; > > Finally, I don't know if this options are valid for a 3D case. > > Thank you for your time and support. > > Best regards > > <Mesh_example.pdf>_______________________________________________ > gmsh mailing list > gmsh@onelab.info > http://onelab.info/mailman/listinfo/gmsh — 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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