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Numerical Simulation of Electromagnetic Wave Propagation using Time Domain Meshless Method

Soichiro IKUNO, Yoshihisa FUJITA, Taku ITOH¹⁾, Susumu NAKATA²⁾, Hiroaki NAKAMURA³⁾ and Atsushi KAMITANI⁴⁾

Tokyo University of Technology, Katakura, 1404-1 Hachioji, Tokyo 192-0982, Japan

1)

Seikei University, Kichijoji-kitamachi, 3-3-1 Musashino, Tokyo 180-8633, Japan

2)

Ritsumeikan University, Nojihigashi, 1-1-1 Kusatsu, Shiga 525-5062, Japan

3)

National Institute for Fusion Science, Oroshi-cho, 322-6 Toki, Gifu 509-5292, Japan

4)

Yamagata University, Johnan, 4-3-16 Yonezawa, Yamagata 992-8510, Japan

(Received 9 December 2011 / Accepted 7 March 2012 / Published 10 May 2012)

Abstract

The electromagnetic wave propagation in various shaped wave guide is simulated by using meshless time domain method (MTDM). Generally, Finite Differential Time Domain (FDTD) method is applied for electromagnetic wave propagation simulation. However, the numerical domain should be divided into rectangle meshes if FDTD method is applied for the simulation. On the other hand, the node disposition of MTDM can easily describe the structure of arbitrary shaped wave guide. This is the large advantage of the meshless time domain method. The results of computations show that the damping rate is stably calculated in case with R < 0.03, where R denotes a support radius of the weight function for the shape function. And the results indicate that the support radius R of the weight functions should be selected small, and monomials must be used for calculating the shape functions.

Copyright (c) 2012 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

electromagnetic wave propagation, FDTD, meshless method, RPIM

DOI: 10.1585/pfr.7.2406044

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References

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This paper may be cited as follows:

Soichiro IKUNO, Yoshihisa FUJITA, Taku ITOH, Susumu NAKATA, Hiroaki NAKAMURA and Atsushi KAMITANI, Plasma Fusion Res. 7, 2406044 (2012).