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Vortex Breakdown Effects on the Low-speed Aerodynamic Characteristics of Slender Delta Wings in Symmetrical Flow

Published online by Cambridge University Press:  04 July 2016

D. Hummel  and
P. S. Srinivasan
D. Hummel
Affiliation:
Institute for Fluid Mechanics of the Technical University of Braunschweig, West Germany
P. S. Srinivasan
Affiliation:
Department of Aeronautics and Applied Mechanics, Indian Institute of Technology, Madras
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Extract

Even at small angles of incidence, the flow separates from the sharp leading edges of a slender wing. These flow separations usually lead to the formation of two free vortex layers, joined to the leading edges of the wing and rolling up to form spiral-shaped vortex sheets above the upper surface of the wing. This vortex formation is illustrated schematically in Fig. 1. The streamlines on the vortex sheet follow helical paths. Smoke injected near the wing apex for flow visualisation remains concentrated close to the axis of the core of the vortex sheet.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 71 , Issue 676 , April 1967 , pp. 319 - 322
Copyright
Copyright © Royal Aeronautical Society 1967

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