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Time Dependent continuity equation using PDE interface

Posted Jan 22, 2022, 4:27 p.m. EST Version 5.6 0 Replies

Anurag Rajan
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Hello,

I am trying to use the PDE interface module to use Darcy's law in the time dependant continuity equation for a porous medium. The Coefficient form allows me to use u as a dependant variable, but the continuity equation for a porous medium has (rho).(phi) as the time dependant variables and then has divergence of (rho).(u). How do I write this in the PDE coefficent form. I know that something similar is implemented in the Darcy's law interface, but we dont have that license, and I would need more flexibility to use my own PDEs as our research progresses. I would appreciate any suggestions in this regard,

Thanks, Anurag

0 Replies Last Post Jan 22, 2022, 4:27 p.m. EST
COMSOL Moderator

Hello Anurag Rajan

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