电磁场时域数值算法的新进展  

New development of time-domain numerical algorithms for electromagnetic field

作　　者：魏兵 陈娟[2] 何欣波 范凯航 杨谦 李林茜 WEI Bing;CHEN Juan;HE Xinbo;FAN Kaihang;YANG Qian;LI Linqian(School of Physics and Optoelectronic Engineering,Xidian University,Xi'an 710071,China;School of information and Communications Engineering,XVan Jiaotong University,Xi'an 710049,China)

机构地区：[1]西安电子科技大学物理与光电工程学院,西安710071 [2]西安交通大学信息与通信工程学院,西安710049

出　　处：《电波科学学报》2020年第1期55-68,共14页Chinese Journal of Radio Science

基　　金：国家自然科学基金(61571348);预研领域基金(6140518020206)。

摘　　要：电磁场时域计算方法由于一次计算可以获得目标的时域响应,结合傅里叶变换得到宽带信息等的优势越来越受到关注.本文介绍了近年来时域有限差分(finite-difference time-domain,FDTD)法和时域有限元(finite element time-domain,FETD)无条件稳定算法方面的研究进展以及FETD算法的更新方案--时域非连续伽辽金(discontinuous Galerkin time-domain,DGTD)方法的新进展.The time-domain computation of electromagnetic field has attracted more and more attention because it can obtain the time-domain response of the target by one calculation, and combines the advantages of Fourier transform to obtain broadband information. In this paper, the research progress of finite-difference time-domain and unconditional stability algorithm of finite element time-domain in recent years is introduced. In addition, the new development of discontinuous Galerkin method time-domain, which is an updated scheme of finite element method time-domain, is introduced.

关 键 词：时域非连续伽辽金(DGTD)法 时域有限元(FETD)算法 时域有限差分(FDTD)方法 无条件稳定 数值通量 

分 类 号：O441[理学—电磁学]