Two-dimensional simulation of transition from primary to secondary streamer discharge in air
Two-dimensional simulation of transition from primary to secondary streamer discharge in air
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DOI：
10.1063/1.5098092
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发表时间：
2019-09
期刊：
影响因子：
1.6
通讯作者：
Longjian Zhao;Y. Zang;Wei Liu;Y. Qian;Xiaoli Zhou
中科院分区：
文献类型：
--
作者：
Longjian Zhao;Y. Zang;Wei Liu;Y. Qian;Xiaoli Zhou
本文提出了大气压针面流光放电的二维模拟。该模型由电子和离子的三个连续性方程以及泊松方程组成。通过电离反应的影响来估计光子通量。讨论了主流光到副流光的电场和光子通量的分布，其中主流光速度为2.16×105 m/s，副流光灯丝半径为0.012 cm~0.02 cm。光子通量的变化与电场的变化类似。当流注靠近阴极时，光子通量从4.5×1026 m-3s-1呈指数增加到2.42×1028 m-3s-1。由于电场均匀，次级流光类似于均匀的灯丝。
A Two-dimensional simulation of the atmospheric pressure needle-plane streamer discharge is presented in this paper. The model consists of three continuity equations for electrons and ions coupled with Poisson’s equation. Photon flux was estimated by the impact of the ionization reactions. The distributions of the electric field and photon flux from the primary streamer to the secondary streamer are discussed, where velocity of the primary streamer was 2.16×105 m/s and the radius of the filament of the secondary streamer varied from 0.012 cm to 0.02 cm. The variation in photon flux was similar to that of the electric field. When the streamer was close to the cathode, the photon flux exponentially increased from 4.5×1026 m-3s-1 to 2.42×1028 m-3s-1. The secondary streamer was similar to a uniform filament because of a uniform electric field.