Le mardi 3 juillet 2007 15:51, Veronique a écrit : > Hello, > I would like to use Xfem elements for an electrostatic problem with two > different permittivities inside and outside the level set. So I will > have a discontinuous field accross the level-set. > I don't find an example to create a Xfem as proposed in the documentation: > Xfem xf(pf); > xf.add_function(pXf,pXg,pHh,ind); > Could you help me? > Best regards, > Véronique Rochus
Could you specify a little bit more your problem ? Your field is discontinuous, but does it have a singularity ? Do you have a specific boundary equation concerning the jump across the level-set ? If the answer is no to the two last questions, you can just use a "mesh_fem_level_set" object which represents a discontinuity accross a level-set. A example of use (but too much complicated for your use) is the test program tests/crack.cc -- Yves. ------------------------------------------------------------------------- Yves Renard ([EMAIL PROTECTED]) tel : (33) 04.72.43.80.11 Pole de Mathematiques, fax : (33) 04.72.43.85.29 Institut Camille Jordan - CNRS UMR 5208 INSA de Lyon, Universite de Lyon 20, rue Albert Einstein 69621 Villeurbanne Cedex, FRANCE http://math.univ-lyon1.fr/~renard ------------------------------------------------------------------------- _______________________________________________ Getfem-users mailing list [email protected] https://mail.gna.org/listinfo/getfem-users
