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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Veröffentlicht in:International journal of numerical modelling 2019-03, Vol.32 (2), p.n/a
Hauptverfasser: Feng, Xuejian, Deng, Haochuan, Wei, Xiao, Yin, Hongcheng, Yang, Lixia
Format: Artikel
Sprache:eng
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Zusammenfassung: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