[Dune] Internal boundary surfaces via the Dune grid approach ???

[Jö Fahlke]

Am Fri, 13. Nov 2009, 12:29:29 +0100 schrieb Oswald Benedikt:
> If not, how should we do this ? 
> 
> Just find out if a triangle is adjacent to 2 specific volume domains ? This may be viable but still be somewhat 
> inefficient.

I think that is how it has to be done currently.  For boundary integrals it
may pay off to find the elements adjacent to the fictitious boundary once and
store entity pointers to them in a list.  It's possible that dune-subgrid
(http://numerik.mi.fu-berlin.de/dune-subgrid/index.php) can do just that, but
I haven't looked at it.

I don't think that you can get much more efficient than that for general
fictitious boundaries unless you build a grid tuned to support just that.  (Of
course, I'm not an expert on grids).

Bye,
Jö.

-- 
This is the first age that's paid much attention to the future, which
is a little ironic since we may not have one.
-- Arthur C Clarke
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 828 bytes
Desc: Digital signature
URL: <https://lists.dune-project.org/pipermail/dune/attachments/20091113/6a0c7d0c/attachment.sig>