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首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >Efficient PML implementation based on the unconditionally stable CN-FDTD algorithm for anisotropic magnetized plasma
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Efficient PML implementation based on the unconditionally stable CN-FDTD algorithm for anisotropic magnetized plasma

机译:基于无条件稳定的各向异性磁化等离子体的无条件稳定CN-FDTD算法的高效PML实现

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摘要

Based on the bilinear transform (BT) method and the Crank-Nicolson-approximate-decoupling (CNAD) algorithm, an efficient unconditionally stable implementation of the stretched coordinate perfectly matched layer (SC-PML) is proposed to truncate anisotropic magnetized plasma. The dispersive magnetized plasma can be calculated by the modified auxiliary differential equation (ADE) method. The proposed SC-PML formulations not only have the advantage of the conventional PML in terms of the absorbing performances but also take the advantage of unconditional stability of the original CN algorithm. In this paper, numerical examples are provided in the two-dimensional domain with anisotropic magnetized plasma to validate the effectiveness of the algorithm. The results show that the proposed SC-PML is an unconditionally stable scheme for the time step which surpasses the Courant-Friedrichs-Lewy (CFL) condition and it has considerable absorbing performance.
机译:基于双线性变换(BT)方法和曲柄 - 尼古尔森 - 近似解耦(CNAD)算法,提出了拉伸坐标完美匹配层(SC-PML)的有效无条件稳定的实现,以截断各向异性磁化等离子体。 可以通过改进的辅助微分方程(ADE)方法来计算色散磁化等式。 在吸收性能方面,所提出的SC-PML制剂不仅具有传统PML的优点,而且还采用原始CN算法的无条件稳定性的优点。 在本文中,具有各向异性磁化等离子体的二维域中提供了数值示例,以验证算法的有效性。 结果表明,所提出的SC-PML是一个无条件稳定的方案,用于超越傅兔菌乐(CFL)病症,具有相当大的吸收性能。

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