Stability of supersonic boundary layer under the influence of heavy gas injection: experimental study

被引：5

作者：

Lysenko, V. I. ^{[1
]}

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

Ermolaev, Yu. G. ^{[1
]}

Kosinov, A. D. ^{[1
]}

机构：

[1] Khristianovich Inst Theoret & Appl Mech SB RAS, Novosibirsk, Russia

来源：

THERMOPHYSICS AND AEROMECHANICS | 2018年 / 25卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

compressible boundary layer; permeable surface; injection; heavy gas; hydrodynamic stability; STABILIZATION; PERMEABILITY; ROUGHNESS;

D O I：

10.1134/S0869864318020038

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Experiments were performed on the influence of distributed injection of a heavy gas (elegas SF6) into the near-wall region of the supersonic (freestream Mach number De(a) = 2) boundary layer on its stability in relation to natural disturbances. Heavy gas injection for the case of linear development of disturbance field results in boundary layer stabilization. It was experimentally proved that the elegas injection can suppress disturbances at the frequencies higher than 15 kHz for the tested range of the streamwise coordinate.

引用

页码：183 / 190

页数：8

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