THE FINITE-ELEMENT MODELING OF STATIC AND STATIONARY ELECTRIC AND MAGNETIC-FIELDS

A finite-element method is described for computing static and stationa ry electric and magnetic fields directly in terms of the electric or m agnetic field strength. In this way the use of (vector) potentials is avoided and a much higher accuracy is achieved with the same computati onal effort. The curl equation is supplemented with the electromagneti c compatibility relations and a problem is defined which is known to h ave a unique solution. For satisfying the conditions at the interfaces between different media use is made of both edge and nodal elements. The validity of our approach is illustrated by solving a simple sample problem.