Optimal Use of the FEM-DBCI Method for Open-Boundary Problems

This paper recommends an optimal use of the hybrid FEM-DBCI method for the computation of open boundary electromagnetic fields. The unbounded domain is truncated to a minimum and the FEM is applied. The unknown Dirichlet condition on the truncation boundary is expressed by means of an integral equation whose support surface is selected in the middle of the most external layer of the finite element mesh. The method is applicable to the solution of electrostatic, d.c. current density, time-harmonic skin effect and eddy current problems.