dolfin team mailing list archive

["Andy Ray Terrel" <aterrel@xxxxxxxxxxxx>]

On Mon, Nov 3, 2008 at 12:40 PM, Anders Logg <logg@xxxxxxxxx> wrote:
> 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
>

Sounds good.  I just thought I would poke the list before I tried
getting it to work on my own.

-- Andy