On 9/16/24 05:38, Najwa Alshehri wrote:
It could be an issue related to having one of the meshes circle approximated
by a polygon. I have a guess that the error of not fitting the circle exactly
is seen worse using higher order elements.
You may be interested in this discussion:
https://dealii.org/developer/doxygen/deal.II/step_6.html#step_6-Abettermesh
Best
W.
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