Recent content by crum

I make a small sphere inside of a big simulation box (100times the size of the sphere). I set the laplace to hold inside of the simulation box and inside the sphere. I set neumann conditions on the surface of the sphere, and flux=0 BC on the edge of the box. I don't know what other info i could...

Homework Statement I'm trying to solve Laplace's equation numerically in 3d for a charged sphere in a big box. I'm using Comsol, which solves using the finite elements method. I used neumann BC on the surface of the sphere, and flux=0 BC on the box in which I have the sphere. The result does...