Experimental Investigation of a Roughness Element Wake on a Hypersonic Flat Plate

Junhao Han; Lin He; Xiwang Xu; Zhengbang Wu

doi:10.3390/aerospace9100574

Aerospace (Oct 2022)

Experimental Investigation of a Roughness Element Wake on a Hypersonic Flat Plate

Junhao Han,
Lin He,
Xiwang Xu,
Zhengbang Wu

Affiliations

Junhao Han: College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
Lin He: College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
Xiwang Xu: College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
Zhengbang Wu: College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

DOI: https://doi.org/10.3390/aerospace9100574
Journal volume & issue: Vol. 9, no. 10
p. 574

Abstract

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An experimental investigation was performed on the wake flow field of an isolated roughness element of a flat plate at Mach 6 by employing the nanoparticle-based planar laser scattering (NPLS) approach. The three-dimensional features and causes of the flow field structure were scrutinized by transient flow field images of roughness elements on various planes. The time-resolved NPLS technique was implemented to examine the time evolution characteristics of the wake flow field of roughness elements. In the following, the process of dynamic evolution of large-scale vortex structures in the wake flow field was methodically assessed. Additionally, the influences of roughness element heights on the wake vortex structure were evaluated and the obtained results were compared.

Published in Aerospace

ISSN: 2226-4310 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Motor vehicles. Aeronautics. Astronautics
Website: http://www.mdpi.com/journal/aerospace

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