Study on discharge characteristics of low-temperature sub-atmospheric pressure under steep change rate voltage  

作　　者：Bo ZHU Ximu HAN He SU Xiangjie MA Guoyan WU 朱博;韩稀木;苏贺;马祥杰;吴国延(MOE Key Laboratory of Engineering Dielectrics and its Application,Harbin University of Science and Technology,Harbin 150080,People’s Republic of China;Huaneng Guanyun Clean Energy Power Generation Co.Ltd.,Lianyungang 222228,People’s Republic of China)

机构地区：[1]MOE Key Laboratory of Engineering Dielectrics and its Application,Harbin University of Science and Technology,Harbin 150080,People’s Republic of China [2]Huaneng Guanyun Clean Energy Power Generation Co.Ltd.,Lianyungang 222228,People’s Republic of China

出　　处：《Plasma Science and Technology》2025年第1期52-61,共10页等离子体科学和技术(英文版)

摘　　要：Aiming at the gas discharge problem in electric aircraft,this work studies the gas discharge characteristics at low-temperature sub-atmospheric pressure.A gas discharge shooting platform was built,and the discharge process was photographed by intensified charge-coupled device(ICCD).A two-dimensional axisymmetric model of needle-plate electrode gas discharge was established,and three sets of Helmholtz equations were used to solve the photoionization.The results show that under the same voltage,the electric field intensity in the discharge process increases first,then decreases and finally increases again.The discharge speed increases with the increase of altitude,and the electron density in the streamer decreases with the increase of altitude.The development speed of the streamer in the middle stage is higher than that in the early stage,and the speed increases more obviously with the increase of altitude.The development speed of the streamer in the later stage is lower than that in the middle stage,but with the increase of altitude,the development speed of the streamer in the later stage is higher than that in the middle stage.

关 键 词：electric aircraft gas discharge steep change rate voltage electric field intensity electron density 

分 类 号：V272[航空宇航科学与技术—飞行器设计] V219[理学—电子物理学] O461[理学—物理]