dolfin team mailing list archive

["Johan Hoffman" <jhoffman@xxxxxxxxxx>]

Interesting! Is this related to the XFEM/Enriched-FEM/Isogeometric-FEM
efforts? Can you send me a paper?

/Johan

> Andy and I are publishing a paper to this effect. I can send you a copy.
>
>   Matt
>
> On Jan 15, 2008 9:22 PM, Gideon Simpson <grs2103@xxxxxxxxxxxx> wrote:
>>  Scratch that.  I discovered COMSOL does something very nice that boosts
>> the
>> quality of its results.  If I have a curved boundary on my geometry,
>> COMSOL
>> will interpolate the associated quadrature on the cells along that
>> boundary
>> to improve accuracy.  When I turn that feature off, the results are
>> consistent with what I'm getting from FEniCS.
>>
>> But the question remains: are there any benchmarks?
>>
>>
>>
>>
>> -gideon
>>
>>
>> On Jan 15, 2008, at 9:51 PM, Gideon Simpson wrote:
>>
>>
>> Has anyone done any benchmarking with dolfin?
>>
>> I've been comparing some dolfin output to some problems I've previously
>> done
>> using COMSOL and I have to tell you I'm not crazy about the results.  In
>> particular, I'm interested in linear Stokes flow problems around objects
>> that arise out of homogenization and I find that when I compute the
>> domain
>> averages of the variables ( pressure, velocity ), as one does in such
>> problems, the convergence to a fixed value as the mesh is refined isn't
>> so
>> good.  I've tried both iterative and direct solvers too.
>>
>>
>> -gideon
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>
>
>
> --
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which
> their experiments lead.
> -- Norbert Wiener
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