TY - JOUR

T1 - Numerical study of disturbances generated by localized impulse action in a flat-plate boundary layer at Mach 2

AU - Khaibullina, S. R.

AU - Yatskikh, A. A.

AU - Semenov, A. N.

AU - Kocharin, V. L.

N1 - Funding Information: The research was carried out within the framework of the Program of Fundamental Scientific Research of the state academies of sciences (project No. АААА-А19-119051590050-2). Publisher Copyright: © Published under licence by IOP Publishing Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/4/19

Y1 - 2021/4/19

N2 - The work is devoted to the numerical simulation of the excitation and development of localized disturbances in the supersonic boundary layer of a plate with a sharp leading edge at a Mach number of 2 in a two-dimensional formulation. Artificial disturbances are generated with the help of localized in time and space by changing the boundary conditions to the velocity component normal to the surface. The studies for two intensities of the impulse action were carried out. It was found that with an increase in the intensity of the action on the boundary layer, the amplitude of the generated disturbances increases. The development of disturbances of various amplitudes is similar. The ratio of the level of total temperature pulsations to the level of mass flow pulsations was estimated for the investigated disturbances. It was found that at small distances from the source of disturbances, this ratio increases downstream, at the same time in the far field, it reaches a constant value.

AB - The work is devoted to the numerical simulation of the excitation and development of localized disturbances in the supersonic boundary layer of a plate with a sharp leading edge at a Mach number of 2 in a two-dimensional formulation. Artificial disturbances are generated with the help of localized in time and space by changing the boundary conditions to the velocity component normal to the surface. The studies for two intensities of the impulse action were carried out. It was found that with an increase in the intensity of the action on the boundary layer, the amplitude of the generated disturbances increases. The development of disturbances of various amplitudes is similar. The ratio of the level of total temperature pulsations to the level of mass flow pulsations was estimated for the investigated disturbances. It was found that at small distances from the source of disturbances, this ratio increases downstream, at the same time in the far field, it reaches a constant value.

UR - http://www.scopus.com/inward/record.url?scp=85104848250&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1867/1/012005

DO - 10.1088/1742-6596/1867/1/012005

M3 - Conference article

AN - SCOPUS:85104848250

VL - 1867

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012005

T2 - 16th All-Russian School-Conference of Young Scientists with International Participation on Actual Problems of Thermal Physics and Physical Hydrodynamics, APTPH XVI 2020

Y2 - 24 November 2020 through 27 November 2020

ER -