[Dune] parametrized AMR and cell divergence

[Andreas Dedner]

I'm not quite sure I understand the question. Are you seeing problems
when refining the grid using ALU's standard globalRefine method or do 
the problems
only appear when you use your local parametrization and after moving 
nodes around
(I'm not quite clear how you do that with ALU....).
Andreas


On 24/02/15 11:00, Marco Cisternino wrote:
> Good morning,
> I would like to ask duners about deformed AMR.
> I'm working with body fitted mesh and ALUGrid.
> In order to refine my mesh I compute a local parametrization for every 
> coarse element, then I refine the mesh moving new nodes using my 
> parametrization.
> Therefore I compute the cell divergence summing over the cell intersection
> normal . flux * area
> where intersection normals and areas are computed by Dune methods 
> centerUnitNormal and volume(this for a face), while flux is (1,1,1) 
> everywhere.
> I expect 0 over the entire mesh and this is true on the coarse grid, 
> but for a refined grid this is not true for coarse cells sharing 
> intersections with finer cells.
> Does anyone see something like this? And is there a cure? Am I doing 
> something wrong?
>
> Thanks for any hint.
> Bests,
>
> Marco
>
>
>
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