On Mon, Jun 30, 2008 at 11:44:40AM +0200, Dag Lindbo wrote: > Anders Logg wrote: > > On Tue, Jun 17, 2008 at 10:52:06PM +0200, Dag Lindbo wrote: > >> Hello again! > >> > >> Is it correct that Periodic BCs won't work for vector-valued systems? > >> There is a comment to suggest this in PeriodicBC.cpp. Is there a > >> reasonable workaround for the needy? > >> > >> /Dag > > > > I don't know of an easy workaround. > > > > But maybe you can take a look at the code in PeriodicBC.cpp to see if > > it's possible to understand what it does and then extend it? I guess > > the extension will be nontrivial, but the code is fairly well > > documented so it should not be impossible. > > Sorry for the basic question, but I'm struggling to figure out the role > SubSystems play in PeriodicBCs. > > E.g. on a Taylor-Hood element, SubSystem(1) corresponds to pressure - a > scalar. I expected that it would be possible to apply the PBC to this > subsystem. But if I do > PeriodicBC bc(mesh, sub_domain, SubSystem(1)), > and try to apply it I still get an abort that there are "more than one > dof associated with coordinate. Did you forget to specify the subsystem?". > > I would greatly appreciate if someone could help to clarify this. > > /Dag
Is this still an issue? -- Anders _______________________________________________ DOLFIN-dev mailing list [email protected] http://www.fenics.org/mailman/listinfo/dolfin-dev
