Spherical Capacitor

Banner - Spherical Capacitor
Spherical Capacitor Image

Model Data

Type: electromagnetics

Physics Modes: electrostatics

Keywords: axisymmetry capacitor multi domain

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. Or alternatively, follow the linked step-by-step instructions.

FEATool Multiphysics Tutorial - Spherical Capacitor