A user oriented shell for electromagnetic CAD of axisymmetric devices

A special shell for a general-purpose FEM (finite element method) package (MagNet) for the electromagnetic CAD (computer-aided design) of axisymmetric devices is presented. The basic idea of the shell is that a script file may be quickly and easily created for every basic design. Then, the whole FEM solution procedure is conducted automatically. Any design changes can be made easily and quickly, and a whole sequence of CAD tasks can be prepared and run automatically without any user intervention. An open boundary technique is built into the shell to deal with unbounded problems