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 The information provided may be out of date.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.
How to solve laplacian euqations on dielectric sphere?
Posted 14.12.2012, 15:52 GMT-5 Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.2 0 Replies
Please login with a confirmed email address before reporting spam
I'm a starter of Comsol~
I was trying to solve laplacian euqations on a dielectric sphere with a non unity permittivity e, where a uniform electrical field E was applied outside the sphere.
I'm using the coefficient form pde, I'm not sure how to write the boundary condition that dUin/dr=dUout/dr*e, where Uin is the potential inside the sphere, and Uout is the potential outside.
Also, from analytical solution, at infinity, dUout/dr= E*cos(theta), how do we define infinity in Comsol?
Waiting sincerely for your help.
Best,
Zhijing
Hello Zhijing Hu
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.