[Dune] Changes in Quadraturerules?

[Patrick Leidenberger]

Hi Christian,

thats it! If I choose quadrature order 3 every thing works as before,
thanks.

Have a nice weekend

Patrick


Christian Engwer schrieb:
> Dear Patrick,
> 
>> Can anybody explain me what's the effect of these changes on my code's
>> results (using quadrature order 1 on tetrahedra, ALUGrid)?
>> I observe different finite element matrices with 3 times slower convergence.
> 
> The difference is that the quadrature rules for order 1, 2 and 3 on
> simplex 3d were fixed. Due to bugs in the quadrature rules we were
> using order 4 rules, when rules of order 4 or lower were requested.
> 
> If you have slower convergence rates, I assume that you request the
> wrong order of integration. Did you take all transformations etc. into
> account?
> 
> Christian