In this paper, a test system based on the Nano-tracer Planar Laser Scattering(NPLS) technique for studying time evolution of unsteady flow structures is developed to solve the problems of stability and beam combination after parallel connection of multiple monopulse lasers, the overall design and layout of array CCD cameras, and the synchronous and accurate control of the test system. Based on this system, the experimental study on the interactions between the incident shock wave of θ=20° shock generator and the turbulent boundary layer of the incoming wall was performed. The experiments are performed in a Mach number 3.4 supersonic low-noise wind tunnel at the unit Reynolds number of 6.30×106/m. For the first time, eight frames of temporal-correlated fine structure images of transient flow field with shock wave/turbulent boundary layer interaction are obtained under the experimental conditions, and the spatio-temporal evolution characteristics of the flow structure are analyzed.
LU Xiaoge
,
YI Shihe
,
HE Lin
,
QUAN Pengcheng
,
GANG Dundian
. Time evolution process of high resolution shock wave/turbulent boundary layer interaction[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022
, 43(1)
: 626147
-626147
.
DOI: 10.7527/S1000-6893.2021.26147
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