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how do you address a variable at a specific point?

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i want to solve a time dependent diffusion equation in 1D (for the concentration variable "c")
one of the boundary conditions introduces a new variable (call it "H")

parallel to the diffusion problem, i solve another equation to determine H(x,t)

so far, so good

my problem now is: H depends on c, but only on c(x=1,t).
that is, i cant just put "c" in the subdomain settings for H, because then it would take c(x,t)

so, what i need is "c(x=1,t)" in comsol language

how do i write that? didnt find it in the user guide

thanks so far

greetings

1 Reply Last Post 16 aug. 2009 06:17 GMT-4

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Posted: 10 years ago 16 aug. 2009 06:17 GMT-4
For people who might be interested in the solution:

The key is an integration coupling variable (options->integration coupling variable->...)

Greez
For people who might be interested in the solution: The key is an integration coupling variable (options->integration coupling variable->...) Greez

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