Can someone offer some help on this?(adsbygoogle = window.adsbygoogle || []).push({});

I have this diffusion equation:

u_t = div(A\nabla u)

whereAis a 2 by 2 matrix, i.e. it's anisotropic.

I am not sure how I should properly discretize this and solve it numerically. I used simply central difference but it does seem work nicely.

Any help will be greatly appreciated.

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# U_t = div(A\nabla u)

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