Hi,
I need to solve Laplace equation ## \nabla ^2 \Phi(z,r)=0## in cylindrical coordinates in the domain ## r_1<r<r_2 ##, ## 0<z<L ##.
The boundary conditions are:
##
\left\{
\begin{aligned}
&\Phi(0,r)=V_B \\
&\Phi(L,r)=V_P \\
& -{C^{'}}_{ox} \Phi(x,r_2)=C_0 \frac{\partial \Phi(x,r)}{\partial...