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Some Experiments with Vortex Breakdown

Published online by Cambridge University Press:  04 July 2016

M. V. Lowson*
Affiliation:
Formerly Department of Aeronautics and Astronautics, University of Southampton, now Wyle, Huntsville, Alabama, U.S.A.

Summary

Water tunnel flow visualisation experiments on a slender delta wing have revealed some new phenomena connected with vortex breakdown. Vortex breakdown hysteresis has been found, there being two steady flow states at some incidences, one with breakdown on the wing and one without. The formation of vortex breakdown has been studied and found to be a non-axisymmetric instability. It is suggested that pressure gradient plays a more general part in the phenomenon than has been thought hitherto.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1964

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References

1.Elle, B. J. An Investigation at Low Speed of the Flow Near the Apex of Thin Delta Wings With Sharp Leading Edges. R & M 3176, ARC 19 780.Google Scholar
2.Lambourne, N. C. and Bryer, D. W. The Bursting of Leading Edge Vortices—Some Observations and Discussions of the Phenomenon. ARC 22 775, R & M 3282, April 1961.Google Scholar
3.Squire, H. B. Analysis of the Vortex Breakdown Phenomenon, Part II. ARC 22 350.Google Scholar
4.Jones, J. P. The Breakdown of Vortices in Separated Flow. Dept. of Aero, and Astro., Univ. of Southampton. Rep. 140.Google Scholar
5.Ludweig, H. Contribution to the Explanation of the Instability of Vortex Cores Above Lifting Delta Wings. ARC 22 851.Google Scholar
6.Brooke-Benjamin, T.Theory of the Vortex Breakdown Phenomenon. Journal of Fluid Mechanics, Vol. 14, Part 4, pp. 593629, 1962.Google Scholar
7.Jones, J. P. A Note on Prof. Squire's Analysis of the Vortex Breakdown Phenomenon. ARC 22 142.Google Scholar