Numerical Analysis of Lightning Electromagnetic Pulses using the Constrained Interpolation Profile Method

K. Miyagawa, S. Matsumoto, Y. Baba, N. Nagaoka, and A. Ametani (Japan)


Constrained interpolation profile method, electromagnetic field, finite-difference time-domain method, lightning


In this paper, a numerical procedure for calculating electromagnetic fields in a three-dimensional space using the constrained interpolation profile (CIP) method is presented. Then, this method is applied to calculating electromagnetic fields, which are generated by a lightning return-stroke current wave propagating upward along a vertical straight channel located on flat perfectly conducting ground, and the CIP-calculated waveforms are compared with the corresponding waveforms calculated using the finite-difference time-domain (FDTD) method.

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