dolfin team mailing list archive

["Matthew Knepley" <knepley@xxxxxxxxx>]

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