Wave processes in the shock layer on a flat plate at an angle of attack |
| |
Authors: | A A Maslov S G Mironov T V Poplavskaya I S Tsyryulnikov |
| |
Institution: | 1.Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Division,Russian Academy of Sciences,Novosibirsk,Russia;2.Novosibirsk State University,Novosibirsk,Russia |
| |
Abstract: | A numerical and experimental study of receptivity of the viscous shock layer on a flat plate aligned at an angle of attack
to external acoustic perturbations is performed. Density and pressure fluctuations are measured in experiments at the free-stream
Mach number M
∞
= 21 and Reynolds number Re
1
= 6·10
5
m
−1
. Direct numerical simulations of receptivity of the viscous shock layer to external acoustic perturbations in wide ranges
of the governing parameters are performed by solving the Navier-Stokes equations with the use of high-order shock-capturing
schemes. The calculated intensities of density and pressure fluctuations are found to be in good agreement with experimental
data. Results of the study show that entropy-vortex disturbances dominate in the shock layer at small angles of attack, whereas
acoustic perturbations prevail at angles of attack above 20°. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|