Types of Flow on the Lee Si-de of Delta Wings

Yegna Narayan, K and Seshadri, SN (1995) Types of Flow on the Lee Si-de of Delta Wings. Technical Report. National Aerospace Laboratories, Bangalore, India.

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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. 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 ransitional or when the type of flow is changing from leading edge attached to separated.13; Computational methods have made spectacular advances in recent years. In particular, solu tions of Reynolds averaged Navier-Stokes equations a t fairly high Reynolds number have become possibte and these computations have captured eight of the nine experimentally ohserved flow types including those involving cross flow shock waves and shock induced separation.13; 13;

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Delta Wings;Vortex Flow;Lee Side Flows
    Subjects: PHYSICS > Physics(General)
    AERONAUTICS > Aerodynamics
    Division/Department: Centre for Civil Aircraft Design and Development, Experimental Aerodynamics Division
    Depositing User: Mrs Neetu Chandra
    Date Deposited: 19 May 2006
    Last Modified: 24 May 2010 09:42
    URI: http://nal-ir.nal.res.in/id/eprint/1495

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