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Wave processes in the shock layer on a flat plate at an angle of attack

  • A. A. Maslov
  • S. G. Mironov
  • T. V. Poplavskaya
  • I. S. Tsyryulnikov
Article

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°.

Key words

hypersonic flows shock layer receptivity direct numerical simulations experiment 

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Copyright information

© MAIK/Nauka 2010

Authors and Affiliations

  • A. A. Maslov
    • 1
    • 2
  • S. G. Mironov
    • 1
    • 2
  • T. V. Poplavskaya
    • 1
    • 2
  • I. S. Tsyryulnikov
    • 1
    • 2
  1. 1.Khristianovich Institute of Theoretical and Applied Mechanics, Siberian DivisionRussian Academy of SciencesNovosibirskRussia
  2. 2.Novosibirsk State UniversityNovosibirskRussia

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