A study on computational electromagnetics for global electromagnetic compatibility

2017 Fiscal Year Final Research Report

• Project/Area Number: 26420224
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: The University of Electro-Communications
• Principal Investigator: Ando Yoshiaki 電気通信大学, 大学院情報理工学研究科, 准教授 (30323877)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 自然電磁気減少 / 計算電磁気学 / 電磁界解析 / VLF/LF大地-電離圏導波管伝搬 / 地殻内電磁波伝搬

Outline of Final Research Achievements

In this research, simulation techniques for natural electromagnetic phenomena are developed. First, I developed a perfectly matched layer (PML) to absorb waves at boundaries of a computational domain with the shape of spherical sectors. The numerical measurements show that the developed PML has effective absorbing performance. Second, I developed an identification method of electron density profile in the D-region of the ionosphere by using the VLF/LF waveguide propagation simulation. If the identification parameters are appropriate, approximated profiles can be obtained. Third, the weighted Laguerre polynomial finite difference time domain (WLP-FDTD) method was considered as an effective simulation for electromagnetic wave propagation in the lithosphere. The WLP-FDTD method shows extremely high performance for the simulation, and is about 3000 times faster than the conventional FDTD method.

Free Research Field

計算電磁気学