Types of flow on the lee side of delta wings

Yegna Narayan, K and Seshadri, SN (1997) Types of flow on the lee side of delta wings. Progress in Aerospace Sciences, 33 (3-4). pp. 167-257. ISSN 0376-0421

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Abstract

Delta wings have found wide application in a variety of aerospace vehicles including high performance combat aircraft, supersonic civil aircraft, (proposed) hypersonic aircraft and the space shuttle orbiter. A considerable amount of research work has been carried out over the past three decades and an extensive body of literature is available. The present review focuses attention on the nine possible types of flow that can occur on the lee side of delta wings in a Mach number range which extends from subsonic to hypersonic. The dependence of the flow types on geometrical and freestream parameters has been discussed in detail. The extensive experimental data available has made it possible to obtain a broad physical understanding of the mechanisms underlying the different flow types. However much more work needs to be done to determine the effects of Reynolds number, particularly when either the state of the boundary layer is transitional or when the type of flow is changing from leading edge attached to separated. Computational methods have made spectacular advances in recent years. In particular, solutions of Reynolds averaged Navier-Stokes equations at fairly high Reynolds number have become possible and these computations have captured eight of the nine experimentally observed flow types, including those involving cross flow shock waves and shock-induced separation.13;

Item Type: Journal Article
Uncontrolled Keywords: Delta wing aircraft;Supersonic flow;Hypersonic flow;Subsonic flow13; Reynolds number13; Boundary layers13; Computational methods13; Shock waves13;
Subjects: AERONAUTICS > Aerodynamics
Division/Department: Experimental Aerodynamics Division, Experimental Aerodynamics Division
Depositing User: Ms Indrani V
Date Deposited: 04 May 2007
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4176

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