Analysis of Lightning Electromagnetic Field on Large‐Scale Terrain Model Using Three‐Dimensional MW‐FDTD Parallel Computation

Abstract

AbstractThere have recently been analyses of lightning electromagnetic fields using the FDTD method. However, large‐scale three‐dimensional analyses of a real environment have not been considered, because the FDTD method has a huge computational cost in large‐scale analysis. Thus, we have proposed a three‐dimensional moving window FDTD (MW‐FDTD) method with parallel computation. Our method has a lower computational cost than the conventional FDTD method and the original MW‐FDTD method. In this paper, we study the computational performance of MW‐FDTD parallel computation and large‐scale three‐dimensional analysis of lightning electromagnetic fields on a real terrain model using our MW‐FDTD with parallel computation. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 184(2): 20–27, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22368