dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Mon, Nov 03, 2008 at 12:25:12PM +0100, Andy Ray Terrel wrote:
> On Mon, Nov 3, 2008 at 12:03 PM, Anders Logg <logg@xxxxxxxxx> wrote:
> > On Mon, Nov 03, 2008 at 10:38:16AM +0100, Andy Ray Terrel wrote:
> >> Hello,
> >>
> >> I was wondering if anyone has done anything with coupling fields over
> >> subelements?  I have a mixed method that uses a P2 velocity space and
> >> then couples it to a several P1 subelements for the stress tensor.
> >>
> >> Thanks,
> >> Andy
> >
> > What do you mean with coupling? We use mixed elements with coupled sub
> > fields (through the variational form) all the time (like in Stokes).
> >
> 
> 
> I mean the same thing as in the Stokes example, except velocity is on
> a reference triangle and the stress is on n triangles partitioning the
> reference.  I would handle all the mixed element formulation the same
> and couple fields in the variational form.

Form on overlapping meshes is not supported, you'll have to do it
manually (by run-time quadrature). We are working on similar
formulations (forms on overlapping non-matching meshes) so I might be
interested in adding support for this at some point.

-- 
Anders

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