Effect of electric-discharge plasma on gas-dynamic flow modes of a supersonic jet impinging on a barrier

被引：0

作者：

Fomin, V. M. ^{[1
]}

Lomanovich, K. A. ^{[1
]}

Postnikov, B. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Siberian Branch, Novosibirsk 630090, Russia

来源：

DOKLADY PHYSICS | 2015年 / 60卷 / 04期

关键词：

Electric discharges;

D O I：

10.1134/S1028335815040102

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The action of the dc electric-discharge plasma initiated near the supersonic jet boundary to the change of gas-dynamic modes of the shockwave flow around a barrier was investigated. The experimental investigations were carried out on jet installations of periodic operation with an established flow time of about one minute. The supersonic profile or sound conic nozzle forming the axisymmetric jet decelerated on a flat impenetrable cylindrical barrier. At the jet impact to the barrier, there was a set of pressure shocks or shockwaves in the unsteady flow-around mode. The measurements of the pressure distribution over the barrier showed that the electric discharge affects the development of the self-oscillatory process by the mechanism with both external and internal acoustic feedback, due to the interaction of the recircular flow with the thermal trace of the discharge.

引用

页码：160 / 163

页数：4

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