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Does Comsol support the following coupled PDEs?

Posted Feb 24, 2016, 4:39 a.m. EST 0 Replies

renphysics
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Dear all,

Does Comsol support the following coupled PDEs for u1(x,y) and u2(x,y)?

g1(u1,u2)*u1xx + g2(u1,u2)*u1yy + g3(u1,u2)*u1xy + g4(u1,u2)=0
h1(u1,u2)*u2xx + h2(u1,u2)*u2yy + h3(u1,u2)*u2xy + h4(u1,u2)=0

where g1, g2, g3, g4, h1, h2, h3, h4 are certain functions of u1 and u2.

We need to convert the above equations to the "general form":

div(Gamma)=f

For the above two coupled PDEs, their second-derivative terms are not a divergence. How to input those equations to Comsol?

Any comments will be appreciated.

Best,
Jie Ren
0 Replies Last Post Feb 24, 2016, 4:39 a.m. EST
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