Model of an electrostatic spherical capacitor. The example makes use of a 2D axisymmetric approximation with three subdomains, where an electric charge is applied between the middle insulating layer. For this configuration the analytic capacitance can be calculated as 4*πεrε0/dr, where dr is the thickness of the insulating layer.
This model is available as an automated tutorial by selecting Model Examples and Tutorials… > Electromagnetics > Spherical Capacitor from the File menu, and also as the MATLAB simulation m-script example ex_electrostatics2. Step-by-step tutorial instructions to set up and run this model are linked below.
