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The Force on a Plane Screen Due to a Normal Jet

Published online by Cambridge University Press:  04 July 2016

B. G. Newman  and
D. M. Bruce
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Extract

The force on a plane wire screen at right angles to the axis of a fully-developed, turbulent and effectively two-dimensional and incompressible jet has been determined. This study was suggested by the use of perforated surfaces in the operation of aircraft. Perforated landing and takeoff pads are used to reduce adverse ground effect, and the re-ingestion of burnt gases, on VTOL aircraft with centrally-located, downward-pointing jets. Perforated baffles are occasionally used to attenuate jet speeds during ground testing of conventional jet aircraft. The study is also relevant to a process in the making of paper. The pulp and water mixture is deposited on a moving screen (Fourdrinier wire), and the jet approaches the screen at an oblique angle.

Type
Research Article
Information
The Aeronautical Journal , Volume 71 , Issue 678 , June 1967 , pp. 435 - 438
Copyright
Copyright © Royal Aeronautical Society 1967

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References

1.Schubauer, G. B., Spangenberg, W. G. and Klebanoff, P. S. Aerodynamic Characteristics of Damping Screens. NACA TN 2001. 1950.Google Scholar
2.Davis, G.de, V.The Flow of Air Through Wire Screens. Proc. 1st Australasian Conference on Fluid Mechanics, pp 191–212. Pergamon. 1962.Google Scholar
3.Squire, H. B. and Hogg, H. Diffuser Resistance Combinations in Relation to Wind-Tunnel Design. RAE Report Aero 1933, April 1944.Google Scholar
4.Taylor, G. I. and Batchelor, G. K.The Effect of a Wire Gauze on Small Disturbances in a Uniform Stream. Quart Journ Mech and Appl Math, Vol 2, pp 1–29, 1949.CrossRefGoogle Scholar
5.Annand, W. J. D.The Resistance to Air Flow of Wire Gauzes. Journ Roy Aero Soc, Vol 57, pp 141–146, 1953.Google Scholar
6.Knystautas, R.The Turbulent Jet from a Series of Holes in Line. Aero Quart, Vol 15, pp 1–28, 1964.CrossRefGoogle Scholar
7.Newman, B. G. Turbulent Jets and Wakes in a Pressure Gradient. GM Conference on “The Fluid Mechanics of Internal Flow,” Detroit 1965.Google Scholar
8.Bruce, D. M. The Change in Momentum of a Two-Dimensional, Incompressible, Turbulent Jet due to a Wire Screen Normal to the Flow. McGill University, MEng Thesis 1966.Google Scholar
9.Baines, W. D and Peterson, E. G.An Investigation of Flow Through Screens. Trans ASME, Vol 73, pp 467–480, 1951.Google Scholar