高度(三角形)
大气压力
流光放电
电压
气体放电
电场
强度(物理)
阶段(地层学)
电极
电子密度
材料科学
机械
空气密度
电弧
环境科学
光学
等离子体
气象学
电气工程
物理
地质学
几何学
工程类
古生物学
量子力学
数学
作者
Bo Zhu,Ximu Han,He Su,Xiangjie Ma,Guoyan Wu
出处
期刊:Plasma Science & Technology
[IOP Publishing]
日期:2024-10-10
标识
DOI:10.1088/2058-6272/ad85bc
摘要
Abstract Aiming at the gas discharge problem under the working environment of electric aircraft, this paper studies the gas discharge characteristics at low-temperature sub-atmospheric pressure. In the aspect of experiment, a gas discharge shooting platform was built, and the discharge process was photographed by ICCD. In the aspect of simulation, a two-dimensional axisymmetric model of needle-plate electrode gas discharge is established, and three sets of Helmholtz equations are 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 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 streamer in the later stage is lower than that in the middle stage, but with the increase of altitude, the development speed of streamer in the later stage is higher than that in the middle stage.
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