Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Two Domains Poisson Equation

Please login with a confirmed email address before reporting spam

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 mai 2012, 05:34 UTC−4
COMSOL Moderator

Hello Martin Hediger

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.