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anisotropic PML

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Anyone know how to define anisotropic PML in comsol?
the default PMLs (cartesian, cylindrical and spherical) are for isotropic or anisotropic?

thanks

2 Replies Last Post Mar 23, 2012, 9:52 p.m. EDT

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Posted: 1 decade ago Mar 23, 2012, 1:17 p.m. EDT
What's the point of doing PML anisotropic?

Usually to work correctly it needs to have the same material properties as the material it's connected to.
What's the point of doing PML anisotropic? Usually to work correctly it needs to have the same material properties as the material it's connected to.

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Posted: 1 decade ago Mar 23, 2012, 9:52 p.m. EDT
im also not sure.
i refer to journal, some of them mentioned they used FEM with anisotropic PML in their simulation.
They didnt explain why they want to use anisotropic instead of isotropic PML........
im also not sure. i refer to journal, some of them mentioned they used FEM with anisotropic PML in their simulation. They didnt explain why they want to use anisotropic instead of isotropic PML........

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