DING Jie,LIU Kun,ZHANG Shun.Simulation Research on Coupling of Metal Cavity Near the Lightning Channel[J].Journal of Chengdu University of Information Technology,2016,(06):565-568.
位于闪电通道附近带孔缝的金属箱体 耦合效应的仿真研究
- Title:
- Simulation Research on Coupling of Metal Cavity Near the Lightning Channel
- 文章编号:
- 2096-1618(2016)06-0565-04
- 分类号:
- TM153+.1
- 文献标志码:
- A
- 摘要:
- 针对位于闪电附近的带有一个孔缝的金属箱体的屏蔽效能开展研究。首先,依据山东人工触发闪电实验 (SHATLE基地进行的人工触发闪电得到的距离闪电通道78 m处的磁场结果,验证仿真磁场的有效性。之后,通过建立 仿真模型进行仿真与分析仿真数据得到距离闪电通道78 m处金属箱体的耦合效应。结果表明,闪电通道相对于金属 箱体的位置对金属箱体内部的磁通密度的大小有很大的影响,依据仿真分析,为了电磁屏蔽与散热等目的,孔缝位于 金属箱体顶部将会是较好的选择。
- Abstract:
- Since the thin metal layers results in limited shielding effectiveness against the dominant magnetic field generated by a lightning pulse, research on the shielding effectiveness of metal cavity with slot placed near a lightning channel is of great significance. In this paper, the magnetic fields measured at 78 m distance from the classical rocket-triggered lightning flash during the SHandong Artificially Triggering Lightning Experiment(SHATLE)were compared with simulated magnetic fields, acquiring good agreement. The coupling effects of metal cavity with a slot placed at a distance of 78 m from the lightning channel are then simulated and analyzed based on the simulation model. According to the simulation results, the location of lightning channel relative to the cavity has a great impact on the magnetic flux density inside the cavity. For the electromagnetic shielding and cooling, the slot located at the top side of the cavity has better performance.
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备注/Memo
收稿日期:2016-05-23 基金项目:国家重点基础研究和发展资助项目(2014CB441405); 国家科学自然基金资助项目(41305005); 江苏气象 观测与信息处理重点实验室研究基金资助项目(KDXS1406); 四川省教育厅研究基金资助项目(16CZ0022)