Investigation of the double ramp in hypersonic flow using luminescent measurement systems

Yang, L., Zare-Behtash, H. , Erdem, E. and Kontis, K. (2012) Investigation of the double ramp in hypersonic flow using luminescent measurement systems. Experimental Thermal and Fluid Science, 40, pp. 50-56. (doi:10.1016/j.expthermflusci.2012.01.032)

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Abstract

Compression ramp flows in supersonic and hypersonic environments present unique flow patterns for shock wave-boundary layer interaction studies. They also represent the generic geometry of two-dimensional inlets and deflected control surfaces for re-entry vehicles. Therefore, a detailed knowledge of the flow behaviour created by such geometries is critical for optimum design. The flow is made more complicated due to the presence of separation regions and streamwise Görtler vortices. The objective of the current research is to study the behaviour and characteristics of the flow over the double ramp model placed in hypersonic flow at freestream Mach number of 5. Three different incidence angles of 0°, −2°, and −4° are studied using colour Schlieren and luminescent paints consisting of anodized aluminium pressure-sensitive paint (AA-PSP) and the temperature-sensitive paint (TSP) technique. The colour Schlieren provides description of the external flow while the global surface pressure and temperature distribution is obtained through the AA-PSP and TSP methods. The TSP technique also proves that it is very effective in identifying the location and properties of the Görtler vortices; revealing the effect of incidence on the magnitude and pattern of Görtler vortices formed.

Item Type:Articles (Editorial)
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Zare-Behtash, Dr Hossein
Authors: Yang, L., Zare-Behtash, H., Erdem, E., and Kontis, K.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Experimental Thermal and Fluid Science
Publisher:Elsevier
ISSN:0894-1777
ISSN (Online):1879-2286
Copyright Holders:Copyright © 2012 Elsevier
First Published:First published in Experimental Thermal and Fluid Science 40:50-56
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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