Hi everyone,
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
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