scholarly journals Numerical study of supersonic boundary layer instability on a wavy surface

2021 ◽  
Author(s):  
Dmitry Khotyanovsky ◽  
Alexey Kudryavtsev
Keyword(s):  
Boundary Layer ◽  
Numerical Study ◽  
Supersonic Boundary Layer ◽  
Wavy Surface ◽  
Boundary Layer Instability

scholarly journals Numerical simulation on the development of periodic three-dimensional disturbances in a supersonic boundary layer

2019 ◽  
Vol 196 ◽  
pp. 00016
Author(s):  
Gleb Kolosov ◽  
Alexander Semenov ◽  
Alexey Yatskikh
Keyword(s):  
Boundary Layer ◽  
Mass Flow ◽  
Stokes Equations ◽  
Numerical Study ◽  
Three Dimensional ◽  
Small Diameter ◽  
Supersonic Boundary Layer ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Software Complex

The results of a numerical study of the development of periodic pulsations in a supersonic boundary layer on a flat plate are presented at a Mach number of 2.5 and a unit Reynolds number of 8×106 m–1. Using the software complex ANSYS, the complete Navier-Stokes equations were solved. Periodic mass flow disturbances with a frequency of 20 kHz were introduced into the boundary layer through a small-diameter hole on the surface of the model. Downstream the profiles of the longitudinal mass flow pulsations were recorded, and spectral analysis of the data was carried out. The main characteristics of the development of unstable disturbances in both physical and wave spaces are obtained.

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