Electric Field in a Positive Streamer in Long Air Gaps

被引：3
|
作者：
Bazelyan, E. M. [1 ]
Aleksandrov, N. L. [2 ]
机构：
[1] Khrzhizhanovsky Power Engn Inst, Moscow 117927, Russia
[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia
来源：
PLASMA PHYSICS REPORTS | 2022年 / 48卷 / 07期
关键词：
streamer; leader; spark discharge; electric field; computer simulation; kinetic scheme; development rate; anode radius; voltage pulse parameters; CATHODE-DIRECTED STREAMER; PROPAGATION; CORONA; SIMULATION; DYNAMICS; WEAK; BREAKDOWN; PRESSURE;
D O I：
10.1134/S1063780X22700222
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A numerical simulation of a positive streamer in long (up to 3 m) air gaps under normal conditions was performed within the 1.5D model taking into account the ionization expansion of the channel. It is shown that the average electric field in the channel and the field required to bridge the discharge gap are not universal values and strongly depend on the regime of streamer acceleration after its initiation. In particular, these fields can vary in the range of 3.4-11.2 kV/cm in air at atmospheric pressure, depending on the change in the external electric field in space and time in the initial phase of streamer development.
引用
收藏
页码：789 / 797
页数：9
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