摘要
[目的]为精确分析金属屏蔽腔的时域屏蔽效能,提出一种基于局部时间步进技术和并行技术的时域不连续伽辽金(DGTD)算法。[方法]利用DGTD算法,对金属屏蔽腔进行全波电磁仿真,进而计算时域屏蔽效能(TDSE);利用局部时间步进(LTS)技术增大时间步长,然后结合并行技术显著缩短计算时间;分析金属屏蔽腔的孔径尺寸、腔体厚度、阵列孔间距等设计参数对时域屏蔽效能的影响。[结果]数值算例结果显示,所提方法正确、有效。[结论]所提方法为电磁屏蔽问题的仿真提供了一种有效的工具,对金属屏蔽腔的设计具有一定的指导意义。
[Objective]In order to accurately analyze the time-domain shielding effectiveness(TDSE)of metallic enclosures,a discontinuous Galerkin time domain(DGTD)method based on the local time-stepping(LTS)technique and parallel technique is proposed.[Methods]The full wave electromagnetic simulation of metallic enclosures is carried out by the DGTD method,and the TDSE is then calculated.LTS technology is used to increase the time step size,combined with parallel technology to greatly shorten the computing time.The influence of design parameters such as aperture size,enclosure thickness and array hole spacing on TDSE is then analyzed.[Results]The numerical results show that the proposed method is correct and effective.[Conclusion]The proposed method provides an effective tool for the simulation of electromagnetic shield-ing problems,and has certain guiding significance for the design of metallic enclosures.
作者
贾正朗
刘欣怡
张欢欢
吴为军
陶理
JIA Zhenglang;LIU Xinyi;ZHANG Huanhuan;WU Weijun;TAO Li(School of Electronic Engineering,Xidian University,Xi'an 710071,China;China Ship Development and Design Center,Wuhan 430064,China;Science and Technology on Electromagnetic Compatibility Laboratory,Wuhan 430064,China)
出处
《中国舰船研究》
CSCD
北大核心
2023年第4期84-94,共11页
Chinese Journal of Ship Research
基金
国家自然科学基金资助项目(62127812,62071444)。
关键词
金属屏蔽腔
时域屏蔽效能
时域不连续伽辽金算法
局部时间步进
并行技术
metallic enclosure
time-domain shielding effectiveness(TDSE)
discontinuous Galerkin time domain(DGTD)method
local time-stepping(LTS)
parallel technique
