摘要
位于飞机发动机风扇罩底部位置的栅格式排气孔主要用于排出冷却后的气体,但其易成为高强度辐射场(HIRF)的耦合路径。通过数值计算方法对某客机的栅格式排气孔模型进行仿真研究,计算分析不同频率HIRF环境下的栅格式排气孔屏蔽效能,研究了含栅格孔的腔体模型及平板模型的HIRF效应。研究结果表明,随着频率升高,HIRF信号通过栅格孔透射进入腔体内部导致内部电场增强明显;腔体效应产生的谐振多于孔缝效应,但两种模型的谐振类型在某些点一致。以上结果可以为高强度辐射场的孔缝透射效应提供参考。
The grid-finvent located at the bottom of the aircraft engine fan guard is mainly used to discharge the cooled gas,but it is easy to become the coupling path of the High-Intensity Radiation Field(HIRF).In this paper,a numerical calculation method was used to simulate the grid-fin vent model of a passenger aircraft,calculate and an-alyze the shielding effectiveness of grid-fin vent under different frequency HIRF environments,and study the HIRF effect of the cavity model with grid-fin vent and the plate model.The research results show that:as the frequency in-creases,the HIRF signal penetrates into the cavity through the grid-finvent,resulting in a significate increase in the internal electric field;The cavity effect produces more resonances than the aperture effect,but the resonance types of the two models are the same at some points.These results can provide a reference for the aperture transmission effect of the HIRF.
作者
杜萌
陈延军
罗洋
段雁超
DU Meng;CHEN Yan-jun;LUO Yang;DUAN Yan-chao(School of Electronic Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China;Shanghai Chint intelligent technology co.,ltd,Shanghai 201614,China;Zhaoyuan Technology(Xi'an)Co.,Ltd,Xi'an Shaanxi 710077,China)
出处
《计算机仿真》
北大核心
2023年第5期94-99,共6页
Computer Simulation
基金
水平井随钻阵列感应测井环境动态建模及参数估计(41474108)。
关键词
高强度辐射场
屏蔽效能
电磁谐振
腔体
HIRF
Shielding effectiveness
Electromagnetic resonance
Cavity
