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Define a variable by different equation in every subdomain
Posted 29 ott 2012, 14:10 GMT-4 RF & Microwave Engineering, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.2a 0 Replies
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Right now I'm working on a time-domain simulation of a geometry, which consists out of 3 subdomains. For modeling the physics I use the weak-form interface. In the simulation I use the electromagnetic potential (A) and the polarization fields (P). The equation of A is the same in all subdomains (basically the Maxwell equations), while the subdomains are filled with different materials, and hence the equations for P are different in all subdomains (like a field P1 only defined in subdomain 1, P2 valid in subdomain 2, and P3 in subdomain 3).
My question now is, is it possible to define a variable P which is given by P1 in subdomain 1 and so on. So that I can use this variable in the equations for A?
Or is there a better way to solve my problem,
Best regards and thanks a lot in advance,
Felix
P.S. I don't use the standard formulation of the electrodynamics already included in Comsol, since due to the details of the simulation I need to modify the equations.
Hello Felix
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