Hi Ruth, OK it works, thanks !
Regards, Zacharie ________________________________ De : [email protected] [[email protected]] de la part de Ruth V. Sabariego [[email protected]] Date d'envoi : jeudi 23 juin 2011 21:33 À : [email protected] Objet : Re: [Gmsh] Attractors : meshing for skin effect in round conductors ? Hi Zacharie, Your first possibility will work if you add to your file: Mesh.CharacteristicLengthFromPoints = 1 ; Mesh.CharacteristicLengthExtendFromBoundary = 0 ; By default, the second option is set to one, that's the reason why you don't see the effect of the field you are trying to apply. Regards, Ruth On 23/06/11 21:03, Zacharie DE GRÈVE [530160] wrote: Dear all, I would like to mesh a circular conductor in order to follow the skin effect, i.e. with a fine mesh in the skin depth and a coarser mesh in the centre of the conductor : Point(1) = {0, 0, 0}; Point(2) = {0.1, 0, 0}; Point(3) = {0, 0.1, 0}; Point(4) = {-0.1, 0, 0}; Point(5) = {0, -0.1, 0}; Circle(1) = {2, 1, 3}; Circle(2) = {3, 1, 4}; Circle(3) = {4, 1, 5}; Circle(4) = {5, 1, 2}; Line Loop(5) = {2, 3, 4, 1}; Plane Surface(6) = {5}; I have two possibilities in mind: 1 . Using Line attractors on the circle arcs: Field[1]=Attractor; Field[1].NNodesByEdge = 50; Field[1].EdgesList={1,2,3,4}; Field[2] = Threshold; Field[2].IField = 1; Field[2].LcMin = 0.005; Field[2].LcMax = 0.01; Field[2].DistMin = 0.02; Field[2].DistMax = 0.04; Background Field = 2; This solution does not seem to work (I get a 0.005 mesh everywhere) 2. Using a point attractor : Is it possible to define some kind of "inverse" attractor at the centre of the circle, i.e. with a coarser mesh near the attractor and finer at near surface of the circle ? Thank you very much in advance. Best regards, Zacharie De Grève PhD Student, University of Mons, Belgium _______________________________________________ gmsh mailing list [email protected]<mailto:[email protected]> http://www.geuz.org/mailman/listinfo/gmsh -- Dr. Ir. Ruth V. Sabariego University of Liege, Dept. of Electrical Engineering & Computer Science, Applied & Computational Electromagnetics (ACE), phone: +32-4-3663737 - fax: +32-4-3662910 - http://ace.montefiore.ulg.ac.be/
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