dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

Incidentally, we (myself, Andre Massgin and Mats Larson) discussed a
generalization of assembly over interior facets last week that also
covers the case of intersections between non-matching meshes.

The central concept in assemble_interior_facets is that of a facet and
its two neighboring cells. Our current implementation assumes that
this facet is a facets for both cells in the pair. But a
generalization would include assembly over triples

  (facet, cell0, cell1)

where facet is contained in the closure of each of the two cells, but
it may or may not be a facet for the two cells. It can be part of a
facet or part of the interior. If we can implement this (and generate
the appropriate code), we would be able to cover quite a few
interesting cases (like Nitsche on overlapping non-matching meshes).

--
Anders


On Wed, Nov 04, 2009 at 11:14:40AM +0100, DOLFIN wrote:
> One or more new changesets pushed to the primary dolfin repository.
> A short summary of the last three changesets is included below.
>
> changeset:   7413:4a1d877ec9a4
> tag:         tip
> user:        "Garth N. Wells <gnw20@xxxxxxxxx>"
> date:        Wed Nov 04 10:07:45 2009 +0000
> files:       dolfin/fem/Assembler.cpp dolfin/mesh/Facet.h
> description:
> First simple steps towards parallel assembly of interior facets.
>
>
> changeset:   7412:a34b1f81d1d2
> user:        "Johan Hake <hake@xxxxxxxxx>"
> date:        Sat Oct 31 23:29:25 2009 +0100
> files:       test/unit/function/python/test.py
> description:
> Fix unit test for Function
>
>
> changeset:   7411:84931010048c
> user:        "Johan Hake <hake@xxxxxxxxx>"
> date:        Fri Oct 30 11:02:28 2009 +0100
> files:       dolfin/swig/function_pre.i
> description:
> Fix a bug in typemap used for the Constant interface.
>   - We can now set negative values!
>   - Thanks to Aron for reporting
>
> ----------------------------------------------------------------------
> For more details, visit http://www.fenics.org/hg/dolfin
> _______________________________________________
> DOLFIN-dev mailing list
> DOLFIN-dev@xxxxxxxxxx
> http://www.fenics.org/mailman/listinfo/dolfin-dev

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