Application of Fast Multipole Method to Biot-Savart Law Computations

Conference: CEM 2006 - 6th International Conference on Computational Electromagnetics
04/04/2006 - 04/06/2006 at Aachen, Germany

Proceedings: CEM 2006

Pages: 2Language: englishTyp: PDF

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Hafla, Wolfgang; Buchau, André; Rucker, Wolfgang M. (Institute for Theory of Electrical Engineering, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany)

Evaluation of Biot-Savart law is often necessary when field problems containing free currents, e.g. in exciting coils have to be solved. This can be time-consuming in cases with many observation points mainly because volume integrals have to be carried out which are generally slow. We, therefore, developed an approach to accelerate evaluation of Biot-Savart law with the fast multipole method. Numerical results indicate its efficiency especially when the number of current-carrying volume elements or the number of observation points are high.