Formation of Shock-Wave Flow during Nanosecond Discharge Localization in Unsteady Flow in a Channel with Obstacles

被引：0
|
作者：
Dolbnya, D. I. [1 ]
Znamenskaya, I. A. [1 ]
Lutsky, A. E. [2 ]
Sysoev, N. N. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Phys Dept, Moscow, Russia
[2] Russian Acad Sci, Keldysh Appl Math Inst, Moscow, Russia
来源：
FLUID DYNAMICS | 2023年 / 58卷 / 01期
关键词：
shock wave; discharge self-localization; plasma electrodes; separation flow; volume discharge; surface discharge; rapid heating effect; SUPERSONIC-FLOW;
D O I：
10.1134/S0015462822601917
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The results of studies of the effect of volume and surface pulse discharges on high-speed gas flow in a rectangular shock-tube channel with a change in the profile (obstacle on the lower wall) are given. A single nanosecond surface discharge or a discharge with preionization induced by the plasma electrodes (combined discharge) was initiated in flow downstream of the shock wave with the Mach numbers M-s = 3.2-3.4. The obstacle determines the distribution of the parameters of flow past the obstacle and the pulse discharge plasma redistribution. The density fields of gas dynamic flow under the experimental conditions are obtained and compared with the discharge plasma distribution. It is shown that the shock-wave effect of the discharge on flow behind the obstacle continued from 25 to 70 mu s.
引用
收藏
页码：145 / 151
页数：7
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