Analysis of Lightning Electromagnetic Field with High-precision 3D Terrain Model and GPU Cluster for Lightning Prediction

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K12496
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Sendai National College of Technology
• Principal Investigator: Sonoda Jun 仙台高等専門学校, 知能エレクトロニクス工学科, 教授 (30290696)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 雷放電電磁界 / FDTD / MW-FDTD / 数値地図モデル / UAV-SfM / GPU

Outline of Final Research Achievements

Analysis of lightning electromagnetic field using the finite-difference time-domain (FDTD) method have been studied in recent year．However，large-scale analysis on real environment have not been considered，because the FDTD method requires huge computational cost on large-scale analysis. We proposed a three-dimensional moving window FDTD (MW-FDTD) with parallel computation and applied to large-scale analysis of lightning electromagnetic field with a real numerical terrain model. In this study, we have studied about large-scale analysis of lightning electromagnetic field with real urban models considering many buildings using our MW-FDTD with parallel computation. We have shown effects of observed electromagnetic field on urban model.

Free Research Field

電磁波工学・計算電磁気学