摘要
为分析屏蔽室不同接地位置对其屏蔽效能的影响,应用并行时域有限差分算法,对雷电电磁脉冲和高空核电磁脉冲与开孔屏蔽室的耦合问题进行了数值模拟。计算了屏蔽室在两种接地位置下(前点接地、后点接地)内部的耦合电场,并进行了局部实验验证。研究结果表明:接地点与屏蔽室开孔位置间的距离远,屏蔽效能高;距离近则屏蔽效能低。
In order to analyze the influence of grounding locations on the shielding effectiveness （SE） of shielded room, numerical simulation is done by applying par-allel time-domain finite-difference （FDTD） method on the coupling problems between shielded room and two high power electromagnetic environments, that arelightning electromagnetic pulse （LEMP） and altitude electromagnetic pulse （HEMP）, respectively. Inner coupled electromagnetic （EM） fields are calculatedwhen the shielded room is with different grounding locations. The results indicate that the farther the distance between the grounding location and the aperture, the better the SE of shielded room.
出处
《电波科学学报》
EI
CSCD
北大核心
2012年第1期45-49,65,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金资助项目(60971063)
关键词
并行时域有限差分算法
屏蔽效能
接地位置
高功率电磁环境
parallel time-domain finite-difference method shielding effectiveness
grounding locations high power electromagnetic environment
