摘要
针对以往时域电磁散射数值方法网格剖分等缺点,将基于计算流体力学(CFD)的时域有限体积法(FVTD)中成熟的贴体网格剖分技术引入到对电磁散射的计算。首先阐述了该算法的基本原理、公式,然后分析了算法解题思路、特点,最后以几种二维物体雷达散射截面计算为例,分析、研究了FVTD在电磁散射中的应用,结果表明,FVTD是一种高效准确的时域方法,对解决电磁散射问题有一定的理论和应用价值。
Aiming at the disadvantages of conventional time domain methods in grid subdivision, the mature conformal grid subdivision of the finite-volume time domain method of the computational fluid dynamics is introduced to solve CEM problems. At first,the principle and the formulas of FVTD method are introduced. And then,the way and the characteristics of the method are expatiated. Finally, by taking the numerical calculation of radar cross section of several 2-D objects for example,the application of the FVTD method in CEM is thoroughly analyzed. The result shows that the FVTD method is a high efficient and reliable time domain method.
出处
《航天电子对抗》
2008年第3期56-58,共3页
Aerospace Electronic Warfare
基金
陕西省自然科学基金项目(2005F23)
关键词
计算流体力学
时域有限体积法
数值计算方法
雷达散射截面
computational fluid dynamics
finite-volume time domain method
computational electromagnetics
radar cross section
