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I work on FEM in Mathematica and want to speed up the computation when dealing with very fined mesh (i.e., a huge number of DOF). I found that a very much longer time is consumed when the Coefficients of PDE contains interpolation functions,...
I try to generate a mesh over a region, which has a wavy boundary at its bottom and needs very fine mesh around the bottom. However, the generated mesh boundary is not as smooth as the specified region. The region is ![enter image description...