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A wake source model for airfoils with separated flow

Published online by Cambridge University Press:  21 April 2006

G. V. Parkinson  and
W. Yeung
G. V. Parkinson
Affiliation:
Department of Mechanical Engineering, The University of British Columbia, 2324 Main Mall, Vancouver, BC, V6T 1W5, Canada
W. Yeung
Affiliation:
Department of Mechanical Engineering, The University of British Columbia, 2324 Main Mall, Vancouver, BC, V6T 1W5, Canada
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Abstract

In an extension of an earlier potential-flow theory using conformal mapping and source singularities in the wake region to simulate two-dimensional bluff-body flow, new mapping sequences and additional boundary conditions are presented for the application of the method to lifting airfoils fitted with upper-surface spoilers or lower-surface split flaps of arbitrary size, location, and erection angle. The only empirical input is the base pressure coefficient. Calculations are presented of pressure distribution and lift for several cases of a Joukowsky airfoil fitted with a spoiler or a split flap, and these results are compared with experimental data from wind tunnel tests. Good agreement is found.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 179 , June 1987 , pp. 41 - 57
Copyright
© 1987 Cambridge University Press

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References

Jandali, T. & Parkinson, G. V. 1970 A potential flow theory for airfoil spoilers, Trans. CASI 3, 1.Google Scholar
Nakamura, Y. & Tomonari, Y. 1982 The effects of surface roughness on the flow past circular cylinders at high Reynolds numbers. J. Fluid Mech. 123, 363.Google Scholar
Parkinson, G. V. & Jandali, T. 1970 A wake source model for bluff body potential flow. J. Fluid Mech. 40, 577.Google Scholar
Theodorsen, T. 1931 Theory of wing sections of arbitrary shape. NACA Rep. no. 411.Google Scholar
Woods, L. C. 1961 The Theory of Subsonic Plane Flow. Cambridge University Press.
Yeung, W. 1985 A mathematical model for airfoils with spoilers or split flaps. MASc thesis, University of British Columbia.