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 The information provided may be out of date.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.
Current flowing in resistive material how to find surrounding field
Posted 14 nov. 2011, 18:22 UTC−5 Low-Frequency Electromagnetics Version 4.2 2 Replies
Please login with a confirmed email address before reporting spam
I have a simple model (attached) where I have a aluminum disk that has two contact potentials and current flowing through it. Eventually I would like to add other grounded electrodes in the surrounding space, but as soon as I include a surrounding box that I specify as 'air' COMSOL says it can't solve the problem.
What exactly is going wrong when I just have air surrounding my part? In the attached file, just turn the surrounding cube back to enabled to see what I mean. Thanks!
Attachments:
Please login with a confirmed email address before reporting spam
in the electric currents application mode COMSOL has problems with zero conductivity domains. So you must assign a very small, but non-zero conductivity to the air dpmain. I tried with 1e-99 S/m and it solves.
Cheers
Edgar
Please login with a confirmed email address before reporting spam