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Effect of wing nose shape on the flow in a wing/body junction

Published online by Cambridge University Press:  04 July 2016

R. D. Mehta
R. D. Mehta*
Affiliation:
Department of Aeronautics, Imperial College, London
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Summary

A powerful mechanism for the generation of secondary flow, which does not rely on viscous or turbulent stress, is lateral skewing of a shear layer such as that encountered by the body boundary layer in a wing/body junction. For a given entry shear, the characteristics of the secondary flow (a horse-shoe vortex) will depend on the wing nose shape. The effects of three wing nose shapes on the size, position and strength of the horse-shoe vortex have been studied in low-speed flow. As expected, the vortex size and strength increased with nose bluntness; quantitative data describing this effect are presented in this paper. The results include contours of streamwise velocity and secondary velocity plots from which vorticity contours and a non-dimensional circulation were derived. The results should be of use in wing design where this secondary flow needs to be controlled.

Type
Research Article
Information
The Aeronautical Journal , Volume 88 , Issue 880 , December 1984 , pp. 456 - 460
Copyright
Copyright © Royal Aeronautical Society 1984 

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Footnotes

*

Present address: Department of Aeronautics and Astronautics, JIAA, Stanford University, Stanford, California 94305.

References

1. Horlock, J. H. and Lashmemarayana, B. Secondary Flows: Theory, Experiment, and Application in Turbomachinery Aerodynamics, Ann Rev Fluid Mech, 5, 1973, 247–279.Google Scholar
2. Shabaka, I. M. M. A. Turbulent Flow in a Simulated Wing/Body Junction, PhD Thesis, Aeronautics Dept, Imperial College, London, England, 1979.Google Scholar
3. Shabaka, I. M. M. A. and Bradshaw, P. Turbulent Flow Measurements in an Idealised Wing/Body Junction, AlAA Jnl, 19 February 1981, 131–132.Google Scholar
4. Kline, S. J., Cantwell, B. J. and Lilley, G. M. (Eds) Complex Turbulent Flows, Proceedings, 1980-1981 AFOSR-HTTM-Stanford Conference on Complex Turbulent Flows, 2, 1982.Google Scholar
5. Rubel, A. Computational Techniques for the Calculation of Inviscid Rotational Jet Impingement, AlAA Paper 78-1212, 1978.Google Scholar
6. Hawthorne, W. R. The Secondary Flow about Struts and Airfoils, Jnl Aero Sci, 21, 1954, 588–608.Google Scholar