Hostname: page-component-77c89778f8-7drxs Total loading time: 0 Render date: 2024-07-18T20:31:16.053Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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