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circular variable dependency detected
Posted 2011年5月23日 GMT+2 02:27Parameters, Variables, & FunctionsVersion 4.11 Reply
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Circular variable dependency detected.
- Variable: mod1.rhos
- Geometry: 1
- Domain: 1
The equations that I have I have defined are
Qom= (Ca*exp(-Ea[J/mol]/(R_const[J/(mol*K)]*T[K]))*log(p[Pa]/Peq[Pa])*(rhoss-rhos))
rhos= (1/(1-eata))*intop1(Qom*t)+8000
Can anybody tell me how to solve this?
Thanks in advance
Hello Muhammad Assad
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y=f(x(i-1));
x=f(y(i));
where i is time step number
when two variables are dependent on each other and have to iterate sequentially in each time step to update, it came up with the ''circular variable dependency detected' problem. Even though I used a "time discrete solver", and turn on the "Iterative" node in the solver. It is easy to realize in matlab or other language package, but how to do it in comsol.
Hope anyone can answer that.
Thank you
Yao