Inquiry on Modeling Two PDEs with Three Dependent Variables in COMSOL

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Hello everyone,

I am currently working on a simulation in COMSOL Multiphysics involving two partial differential equations (PDEs) with three dependent variables T, V, and P.

Specifically, I have the following conditions:

When T > 5, I assume V = 0. In this case, the system can be simplified to include only equations for T and P.

When T < 5, I assume P = 0. In this case, the system can be simplified to include only equations for T and V.

What I would like to ask is how to define the dependent variables of these two PDEs: T, V, and P, because within my ability two PDEs can only define two independent variables, and the third one I can't add.

Thank you!


0 Replies Last Post Feb 26, 2024, 6:11 p.m. EST
COMSOL Moderator

Hello Antai Dong

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