Open AccessImplementation of higher order CNAD CFS‐PML for truncating unmagnetised plasma
Author(s) -
Li Jianxiong,
Wu Peiyu,
Jiang Haolin
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.5208
Subject(s) - perfectly matched layer , finite difference time domain method , mathematics , decoupling (probability) , stability (learning theory) , crank–nicolson method , convolution (computer science) , finite difference method , algorithm , mathematical analysis , computer science , boundary value problem , physics , engineering , quantum mechanics , control engineering , machine learning , artificial neural network
An unconditionally stable implementation of the higher order complex frequency‐shifted (CFS) perfectly matched layer (PML) is proposed for the Crank–Nicolson‐approximate‐decoupling (CNAD) finite‐difference time‐domain (FDTD) scheme. The proposed higher order CFS‐PML, which is implemented by the auxiliary differential equation (ADE) method, not only has better performance than the first‐order PML but also maintains the unconditional stability of the origin Crank–Nicolson (CN) algorithm. The unmagnetised plasma, which can be expressed by the Drude medium and implemented by the piecewise linear recursive convolution (PLRC) method, is truncated by the proposed PML scheme. A numerical example is provided to validate the effectiveness of the proposed formulations.