On vendredi 30 avril 2010, GUILMIN Anne-Lise wrote: > Hello, > > Ok then I will go on with my own strategy. > I still have a problem with the partial mesh fem (used for lagrangian > multipliers). I update it the same way I do with mesh fem, but this leads > to a context error in the model. So I am thinking about creating new > variables for multipliers at each change of mesh. Is there any way to > destroy a variable of a model? Or just disable it?
Normally, the partial mesh_fem should adapt itself automatically to the new situation. Perhaps, you can send me a piece of code exhibiting the problem. Yves. > > Thank you for your help. > Kind regards, > > Anne-Lise Guilmin. > > -----Message d'origine----- > De : Yves Renard [mailto:[email protected]] > Envoyé : jeudi 29 avril 2010 11:14 > À : [email protected] > Cc : GUILMIN Anne-Lise > Objet : Re: [Getfem-users] Open mesh > > > > Daer Anne-Lise, > > You are right, there is no specific tool for the moment in Getfem++ to deal > with such a situation. This is not a trivial task to produce a generic > algorithm for the automatic re-interpolation (or projection) of a field > after refinement or change of the mesh. So, for the moment, depending on > the situation, a specific strategy have to be developped for each > situation. > > Yves. > > On mercredi 28 avril 2010, GUILMIN Anne-Lise wrote: > > Dear all, > > > > I am working with an open mesh: I add convexes to the mesh before each > > new increment. > > I would like to keep the values of my model variables from one increment > > to another. > > As the mesh changes, the numbering of the dof may change too. Is there > > any predefined function to interpolate the old values on the new > > mesh_fem? > > You may have already met this problem when refining meshes. > > > > For now, I construct a new mesh_fem, then new vectors of variables from > > an interpolation of old ones on the new mesh_fem, and finally I > > overwrite the old meshfem and variables in the model with the new ones. > > This works well with my main variable but not with lagrangian > > multipliers: the computation stops due to an error of context of the > > model after updating the partial_mesh_fem on which are defined the > > multipliers. > > How could I update a partial_mesh_fem and still get a correct context > > for my model? > > > > Thank you for your help. > > > > Anne-Lise Guilmin > > __________________________ > > > > Ce message (et toutes ses pièces jointes éventuelles) est confidentiel et > > établi à l'intention exclusive de ses destinataires. Toute utilisation de > > ce message non conforme à sa destination, toute diffusion ou toute > > publication, totale ou partielle, est interdite, sauf autorisation > > expresse. L'IFP décline toute responsabilité au titre de ce message. > > > > This message and any attachments (the message) are confidential and > > intended solely for the addressees. Any unauthorised use or dissemination > > is prohibited. IFP should not be liable for this message. > > > > Visitez notre site Web / Visit our web site : http://www.ifp.fr > > __________________________ -- Yves Renard ([email protected]) tel : (33) 04.72.43.87.08 Pole de Mathematiques, INSA-Lyon fax : (33) 04.72.43.85.29 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
