Evolution of disturbances in the shock layer on a flat plate in the flow of a mixture of vibrationally excited gases


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The results of the numerical and experimental investigations of the evolution of the disturbances in a hypersonic shock layer on a flat plate streamlined by a flow of the mixture of vibrationally excited gases are presented. The experimental study was conducted in the hot-shot high-enthalpy wind tunnel IT-302 of the ITAM SB RAS. The numerical simulation was carried out with the aid of the ANSYS Fluent package using the solution of the unsteady two-dimensional Navier−Stokes equations with the incorporation of the user-created modules and enabling the consideration of the vibrational non-equilibrium of the carbon dioxide molecules within the framework of the model of the two-temperature aerodynamics. It was obtained that an increase in the carbon dioxide concentration in the mixture with air leads to a reduction of the intensity of pressure disturbances on the surface. The efficiency (up to 20 %) of the method of sound absorbing coatings in the vibrationally excited flows of the mixture of the carbon dioxide and air has been shown.

Sobre autores

S. Kirilovskiy

Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University

Autor responsável pela correspondência
Email: kirilov@itam.nsc.ru
Rússia, Novosibirsk; Novosibirsk

T. Poplavskaya

Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University

Email: kirilov@itam.nsc.ru
Rússia, Novosibirsk; Novosibirsk

I. Tsyryulnikov

Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University

Email: kirilov@itam.nsc.ru
Rússia, Novosibirsk; Novosibirsk

A. Maslov

Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University

Email: kirilov@itam.nsc.ru
Rússia, Novosibirsk; Novosibirsk

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