Study of Shock Wave/Turbulent Boundary Layer Interaction over a Forward-Facing Step

被引：0
|
作者：
Murugan, Jayaprakash N. [1 ]
Govardhan, Raghuraman N. [1 ]
机构：
[1] Indian Inst Sci, Dept Mech Engn, Bangalore 560012, Karnataka, India
来源：
FLUID MECHANICS AND FLUID POWER - CONTEMPORARY RESEARCH | 2017年
关键词：
Shock wave-turbulent boundary layer interaction; Forward-facing step; Separation; Shock oscillation; Particle image velocimetry; COMPRESSION RAMP; SEPARATION;
D O I：
10.1007/978-81-322-2743-4_7
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A detailed experimental study has been done to understand the shock wave-turbulent boundary layer interaction (SWTBLI) over a forward-facing step (FFS) of height (h) in a Mach 2.5 flow using particle-image velocimetry (PIV). In addition to PIV, high-speed schlieren and surface oil flow visualization have been studied. Flow separation using surface oil flow visualization was observed around 4.1 step heights upstream of the step face. High-speed schlieren measurements show that the shock oscillates with a peak frequency of approximately 1000 Hz, which is two orders smaller than the characteristic frequency of the incoming boundary layer. Instantaneous PIV velocity vector fields show that the shock location is related to the separation bubble formed ahead of the forward-facing step.
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页码：63 / 71
页数：9
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