<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000'>Good morning,<br>I would like to ask duners about deformed AMR.<br>I'm working with body fitted mesh and ALUGrid.<br>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.<br>Therefore I compute the cell divergence summing over the cell intersection<br>normal . flux * area<br>where intersection normals and areas are computed by Dune methods centerUnitNormal and volume(this for a face), while flux is (1,1,1) everywhere.<br>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.<br>Does anyone see something like this? And is there a cure? Am I doing something wrong?<br><br>Thanks for any hint.<br>Bests,<br><br>Marco<br><br></div></body></html>