City Research Online

Abstract

A transonic shock-wave/boundary-layer interaction (T-SWBLI) established on a shock-generation bump has been investigated experimentally through particle image velocimetry and high-speed schlieren. The T-SWBLI flowfields have been examined in detail. The near-wall interaction region is visualized with high spatial resolution through schlieren and is further investigated through conditional statistical analysis. Special interests are placed on the unsteadiness associated with the shock-wave motion. The shock-wave locations are extracted to allow spectral analysis of the shock-wave oscillations. The Fourier modal analysis on the schlieren image ensemble is finally reported. The Fourier modes confirm the low-frequency unsteadiness in the shock-wave region and the interaction region. Moreover, the flow fluctuation in the rear part of the interaction region is found to extend into the medium-frequency regime.

Publication Type:	Article
Additional Information:	This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Sun, Z., Miao, X. and Jagadeesh, C. (2020). Experimental investigation of the transonic shock-wave/boundary-layer interaction over a shock-generation bump. Physics of Fluids, 32(10), 106102 and may be found at https://doi.org/10.1063/5.0018763.
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics
Departments:	School of Science & Technology > Engineering
SWORD Depositor:	Symplectic Administrator

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