TY - JOUR

T1 - Stability of supersonic boundary layer under the influence of heavy gas injection

T2 - experimental study

AU - Lysenko, V. I.

AU - Smorodsky, B. V.

AU - Ermolaev, Yu G.

AU - Kosinov, A. D.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - 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 М∞ = 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.

AB - 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 М∞ = 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.

KW - compressible boundary layer

KW - heavy gas

KW - hydrodynamic stability

KW - injection

KW - permeable surface

KW - PERMEABILITY

KW - STABILIZATION

KW - ROUGHNESS

UR - http://www.scopus.com/inward/record.url?scp=85048671882&partnerID=8YFLogxK

U2 - 10.1134/S0869864318020038

DO - 10.1134/S0869864318020038

M3 - Article

AN - SCOPUS:85048671882

VL - 25

SP - 183

EP - 190

JO - Thermophysics and Aeromechanics

JF - Thermophysics and Aeromechanics

SN - 0869-8643

IS - 2

ER -