Efficient computation of source magnetic scalar potential

[摘要] Magnetic field problems are often excited by a known source field whichitself is caused by free currents. Some formulations to solve the problemrequire knowledge of the source magnetic scalar potential whose gradient isthe source field. In general, it has to be computed as a line integral. Anapproach for efficient computation of this potential has been developed thatis based on an algorithm that gives short integration paths as well as onapplication of the fast multipole method. Numerical results indicate theefficiency of this approach especially when the number of current-carryingvolume elements or the number of observation points are high.

[学科分类] 电子、光学、磁材料