Unconditionally stable five‐step LOD‐FDTD method in plasma medium

A three‐dimensional unconditionally stable five‐step locally one‐dimensional finite‐difference time‐domain (LOD‐FDTD) method for anisotropic magnetized plasma medium is presented. Firstly, we search for a diagonal matrix to transform Maxwell coefficient matrix of plasma into skew symmetric matrix wh...

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Bibliographic Details
Published inInternational journal of numerical modelling Vol. 32; no. 2
Main Authors Feng, Xuejian, Deng, Haochuan, Wei, Xiao, Yin, Hongcheng, Yang, Lixia
Format Journal Article
LanguageEnglish
Published Bognor Regis Wiley Subscription Services, Inc 01.03.2019
Subjects
cavity
Computer simulation
Dimensional stability
Finite difference time domain method
locally one‐dimensional
magnetized plasma
Mathematical analysis
Matrix methods
Numerical stability
Plasma
Plasma slabs
Rotating plasmas
Stability analysis
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Summary:A three‐dimensional unconditionally stable five‐step locally one‐dimensional finite‐difference time‐domain (LOD‐FDTD) method for anisotropic magnetized plasma medium is presented. Firstly, we search for a diagonal matrix to transform Maxwell coefficient matrix of plasma into skew symmetric matrix which is beneficial to analyze the properties of the proposed algorithm. Then, the detailed formula derivation and numerical stability analysis is presented. At last, the resonance frequency of a microwave cavity partially filled with a plasma slab and the rotation angle of an infinite plasma slab are simulated to verify the accuracy and stability of the proposed method. The effectiveness of the proposed method is further demonstrated by comparing with the three‐step LOD‐FDTD method.
ISSN:0894-3370
1099-1204
DOI:10.1002/jnm.2522