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how do you address a variable at a specific point?
Posted 12 août 2009, 04:22 UTC−4 1 Reply
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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
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 août 2009, 06:17 UTC−4
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Posted:
2 decades ago
For people who might be interested in the solution:
The key is an integration coupling variable (options->integration coupling variable->...)
Greez
The key is an integration coupling variable (options->integration coupling variable->...)
Greez