摘要
给出了三维磁化等离子体的电流密度卷积-时域有限差分(JEC-FDTD)算法的迭代公式,指出该算法与一般FDTD算法实现并行时的不同:增加了电流密度的迭代,以及并行计算时在子域交界面上增加了一些数据的交换.并实现了基于MPI(Message Passing Interface)的并行JEC-FDTD算法.然后用计算涂覆等离子体的金属球的雷达散射截面(RCS)的算例验证了并行程序的可靠性,并测试了并行程序在某集群上的并行效率.最后计算了涂敷磁化等离子体的全尺寸飞机的单站RCS.结果表明并行JEC-FDTD算法是可靠的,而且并行效率高,能计算各向异性磁化等离子体的电大尺寸目标的散射.
Iterative formulas of JE convolution finite-difference time-domain （JEC-FDTD） algorithm for 3 dimension anisotropic magnetized plasmas were proposed. It had been Pointed out that the difference of the parallel JEC-FDTD algorithm and the general parallel FDTD algorithm. The current density iteration has been added, and more many datum have been exchanged in the common boundaries.And the parallel program of JEC-FDTD algorithm had been gotten based on the MPI. Parallel JEC-FDTD program was reliable by the example that RCS（ radar cross section） of conduct sphere coated plasma had been calculated,and parallel efficiency of parallel program was tested in one cluster.Finally the back RCS of one airplane coated the magnetized plasmas was calculated by the parallel JEC-FDTD. The results indicate that the parallel JEC-FDTD is reliable; its parallel efficiency is high; and it has ability of deal with the scattering characteristics of the electrically large magnetized plasma targets.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2008年第6期1119-1123,共5页
Acta Electronica Sinica
基金
国家重点基础研究项目(No.2002AA731181)
