Numerical Study of the Evolution of Disturbances Generated by Roughness Elements in a Supersonic Boundary Layer on a Blunted Cone


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Results of direct numerical simulations of the roughness-induced development of instability and transition to turbulence in a supersonic boundary layer on a blunted cone for the free-stream Mach number M = 5.95 are presented. The flow parameters and model geometry are consistent with the conditions of the experiments performed in the study. The following roughness types are considered: random distributed roughness, isolated roughness elements of different shapes, and a group of regularly arranged roughness elements. The processes of the instability development and transition for different roughness types are compared, and possible mechanisms of the roughness influence on the stability of boundary layers on blunt bodies are discussed.

Sobre autores

D. Khotyanovsky

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch

Autor responsável pela correspondência
Email: khotyanovsky@itam.nsc.ru
Rússia, Novosibirsk, 630090

S. Kirilovskiy

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch

Email: khotyanovsky@itam.nsc.ru
Rússia, Novosibirsk, 630090

T. Poplavskaya

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch

Email: khotyanovsky@itam.nsc.ru
Rússia, Novosibirsk, 630090

A. Kudryavtsev

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch

Email: khotyanovsky@itam.nsc.ru
Rússia, Novosibirsk, 630090

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