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Two Domains Poisson Equation

Posted 15.05.2012, 05:34 GMT-4 Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.2a 0 Replies

Martin Hediger
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Dear Comsol Users
I have two cylindrically symmetric domains, O1 and O2, which are conducting and isolating, respectively, in 2D. O2 is a 2D shell around O1. I want to evaluate the potential u1 in O1. In O1, the charge density is a function of u1. O2 is charge free. At the interface, a surface charge density s12 is located.
I am wondering now how to correctly setup this problem using the Model Builder. Should I add two times the "Poisson Equation" physics to the model, one for O1 and the other for O2? Or should I add only one "Poisson Equation" physics, but add two Poisson equations to that model?

Thanks for any hints on this.
Martin
0 Replies Last Post 15.05.2012, 05:34 GMT-4
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