等离子体电波传播及散射问题的CDRC-ADI-FDTD方法

CDRC-ADI-FDTD Method for EM Wave Propagation and Scatter in Plasmas

首次把交替方向隐式技术(AD I)与等离子体的电流密度递归(CDRC)卷积技术结合,给出了碰撞非磁化等离子体的CDRC-AD I-FDTD方法。推导了碰撞非磁化等离子体中的二维CDRC-AD I-FDTD迭代公式,并用算例验证了碰撞非磁化等离子体CDRC-AD I-FDTD算法也是无条件稳定的。计算结果表明,等离子体CDRC-AD I-FDTD算法与传统的FDTD方法和等离子体JEC-FDTD方法的计算结果吻合,计算效率更高。

By the alternating direction implicit （ADI） and current density recursive convolution （CDRC） technologies for the first time, a new current density recursive convolution alternating direction implicit finite-difference time-domain （CDRC-ADI FDTD） formulation for collision unmagnetized plasma is presented. The two-dimensional CDRC-ADI FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples. The validity and the efficiency of results are demonstrated by two numerical examples.