Generating Source Field Functions with Limited Support for Edge Finite Element Eddy Current Analysis

A simple method is presented to generate source field functions with limited support to be used in finite element eddy current analysis employing a current vector potential represented by edge basis functions. A current vector potential describing a static current field in the eddy current domain is first constructed. This source field is nonzero in the entire problem domain. Thereupon, it is restricted to a minimal simply connected region including the eddy current domain. The method is illustrated by a numerical example