等离子体的交替方向隐式时域有限差分方法  

ALTERNATING DIRECTION IMPLICIT FINITE-DIFFERENCE TIME-DOMAIN METHOD FOR PLASMAS

作　　者：刘少斌[1] 莫锦军[1] 袁乃昌[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院

出　　处：《红外与毫米波学报》2004年第5期363-366,共4页Journal of Infrared and Millimeter Waves

基　　金：目 :8 63基金资助项目 ( 2 0 0 2AA73 1181) ;国防科技重点实验室基金资助项目 ( 5 14 83 0 10 3 0 1KG0 10 2 );江西自然科学基金 ( 0 412 0 14 )

摘　　要：首次把交替方向隐式时域有限差分法 (ADI FDTD)推广到色散介质———无碰撞非磁化等离子体中 ,计算了非磁化等离子体与电磁波的相互作用 ,使用ADI技术给出了无碰撞等离子体介质中的ADI FDTD迭代公式 .并解析地证明了等离子体ADI FDTD算法也是无条件稳定的 .数值计算表明 ,等离子体ADI FDTD算法与传统的FDTD的计算结果吻合 ,计算效率更高 .The alternating direction implicit finite-difference time-domain ( ADI-FDTD) formulation was extended to dispersive inedia-collisionless unmagnetized plasma for the first time. Electromagnetic interactions of collisionless unmagnetized plasma and electromagnetic wave were calculated by using the method. The update equations for collisionless plasma were proposed by using the principle of ADI technique. The unconditional stability of the ADI-FDTD formulation for plasina was analytically derived. The results of numerical experiment confirm that the plasma ADI-FDTD method is consistent with the conventional FDTD method, and its efficiency is higher.

关 键 词：ADI-FDTD 磁化等离子体 交替方向隐式时域有限差分法 无条件稳定 隐式 色散介质 迭代公式 时域有限差分方法 算法 电磁波 

分 类 号：TN957.52[电子电信—信号与信息处理] O241.82[电子电信—信息与通信工程]