A BEM CODE FOR 3-D EDDY-CURRENT CALCULATIONS

A software package for solving timeharmonic 3-D eddy current problems applying the boundary element method (BEM) has been developed at our Institute (IGTE Graz). The package solves coupled boundary integral equations for the magnetic vector potential and the electric scalar potential within the conductors. and for the magnetic vector potential in non-eddy current regions. The paper describes the boundary integral formulation and its BEM realization. As an example the eddy current field of a non-magnetic, conducting cube immersed in a homogeneous magnetic field with harmonic time variation is calculated. Additional numerical results are presented for a multiply connected eddy current problem (benchmark problem No.7 defined by the International TEAM Workshops [1]). The boundary element solutions are compared with finite element results and show excellent agreement. © 1990, IEEE. All rights reserved.