Techniques of Post-Processing for Electromagnetic Field Solutions

Abstract

The key to the value of any electromagnetic field solution is the ease with which the user can extract from that solution the desired engineering quantities. Described here are some of the techniques used in the post-processor WEPOSTS for the efficient calculation, manipulation and display of the results of finite element solutions to electromagnetic field problems. WEPOSTS is an interactive, graphics based postprocessing system designed to give the user maximum control over the extraction of useful information from a calculated numerical field solution. Techniques are explained for plotting flux lines, loss and force density levels, saturation levels and for the user-directed calculation of derivative-based quantities (e.g., flux density) at points, over elements, along lines and arcs, and in regions. Several examples are provided to illustrate the power of these techniques.