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Electrostatic module coupled with Charge conservation equation.
Posted 4 août 2012, 01:19 UTC−4 1 Reply
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I am trying to solve a simple electrostatic problem in a 2D domain, however I am unable to generate the coupling between the Electrostatic module and the PDE mode (coefficient form) correctly. The PDE solves for an unknown variable (u) in the entire domain defined as (u = V*rho) where V is the potential inside the domain and rho is the local space charge density. Actually the electrostatic module solves for the potential by solving a Poisson equation of the form (LaplacianV = -rho/epsi) while the PDE equation is used as a charge conservation equation that solves for u from which rho can be calculated as (rho = u/V). However if I define rho as u/V in the electrostatic module in order to form the coupling I am getting errors as undefined value found. Can any one guide me how to solve this coupled physics problem in Comsol.
Kindest regards
Hello Sin Kim
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Did you find a solution for your problem? I have the same one. If yes, I need your help please.
Kind Regards,