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Fractal features of turbulent/non-turbulent interface in a shock wave/turbulent boundary-layer interaction flow

  • Yi Zhuang (a1), Huijun Tan (a1), Weixing Wang (a1), Xin Li (a1) and Yunjie Guo (a1)...

Abstract

Fractal features of the turbulent/non-turbulent interface (TNTI) in shock wave/turbulent boundary-layer interaction (SWBLI) flows are essential in understanding the physics of the SWBLI and the supersonic turbulent boundary layer, yet have received almost no attention previously. Accordingly, this study utilises a high spatiotemporal resolution visualisation technique, ice-cluster-based planar laser scattering (IC-PLS), to acquire the TNTI downstream of the reattachment in a SWBLI flow. Evolution of the fractal features of the TNTI in this SWBLI flow is analysed by comparing the parameters of the TNTI acquired in this study with those from a previous result (Zhuang et al.J. Fluid Mech., vol. 843, 2018a).

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Email address for correspondence: thj@263.net

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