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How to define a discontinuous boundary condition

Posted 7 avr. 2011, 03:57 UTC−4 Version 4.0 0 Replies

rui 王
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Hi all,

I just simplify the last post.

I want to solve a nonlinear Poisson equation, so I select general form PDE. I solve two different PDEs in two domains, I do not know how to define a interior discontinuous boundary condition at the interface between the two domains.

Suppose 1D situation and domain 1 is from 0 to 1 and domain 2 is from 1 to 2.
The equations are:
Domain 1: d(du1)=f1(u1)
Domain 2: d(du2)=f2(u2)
where the letter d denote the differential, u1 and u2 are dependant variables, and f1 and f2 denote a function of u1 and u2.

The boundary conditions are:
u1(0)=a,
du1(1)-du2(1)=b (discontinuous boundary condition)
u2(2)=c

Here someone know how to define the discontinuous boundary condition?

yan
0 Replies Last Post 7 avr. 2011, 03:57 UTC−4
COMSOL Moderator

Hello rui 王

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