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

被引：0
作者：
D. V. Khotyanovsky
S. V. Kirilovskiy
T. V. Poplavskaya
A. N. Kudryavtsev
机构：
[1] Russian Academy of Sciences,Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
来源：
Journal of Applied Mechanics and Technical Physics | 2019年 / 60卷
关键词：
direct numerical simulation; laminar-turbulent transition; supersonic boundary layer; distributed roughness; isolated roughness elements; blunted conical body;
D O I：
暂无
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学科分类号：
摘要：
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.
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页码：438 / 450
页数：12
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