dolfin team mailing list archive

[Gideon Simpson <grs2103@xxxxxxxxxxxx>]

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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