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The drag force on spheres in thin jets

Published online by Cambridge University Press:  20 April 2006

R. S. Neve ,
R. Nelson  and
P. Kotsiopoulos
R. S. Neve
Affiliation:
Department of Mechanical Engineering, The City University, London
R. Nelson
Affiliation:
Department of Mechanical Engineering, The City University, London
P. Kotsiopoulos
Affiliation:
Department of Mechanical Engineering, The City University, London
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Abstract

The prediction of drag force on spheres whose diameters are comparable to or greater than the dimensions of jets to which they are exposed is found to be much more difficult than in the more usual ‘fully immersed’ cases. Experimental results show considerable scatter but prediction guidelines are given in the paper. In Reynolds-number terms all results are considered to be supercritical ones because of the typically very high turbulence intensities in the mixing regions of jets.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 107 , June 1981 , pp. 521 - 531
Copyright
© 1981 Cambridge University Press

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References

Achenbach, E. 1972 Experiments on flow past spheres at very high Reynolds numbers. J. Fluid Mech. 54, 565–575.Google Scholar
Achenbach, E. 1974 The effects of surface roughness and tunnel blockage on the flow past spheres. J. Fluid Mech. 65, 113–125.Google Scholar
Davies, P. O. A. L., Fisher, M. J. & Barratt, M. J. 1963 The characteristics of the turbulence in the mixing region of a round jet. J. Fluid Mech. 15, 337–367.Google Scholar
Goldschmidt, V. & Eskinazi, S. 1966 Two phase turbulent flow in a plane jet. Trans. A.S.M.E. E, J. Appl. Mech. 33, 735–747.Google Scholar
Grantham, P. J. 1977 The drag force on partially immersed spheres. M.Sc. thesis, The City University, London (Dept. of Mech. Engineering).
Heskestad, G. 1965 Hot wire measurements in a plane turbulent jet. Trans. A.S.M.E. E, J. Appl. Mech. 32, 721–734 (erratum: 33, 710).Google Scholar
Lavender, W. J. & Pei, C. P. 1967 The effect of fluid turbulence on the rate of heat transfer from spheres. Int. J. Heat Mass Transfer 10, 529–539.Google Scholar
Miller, D. & Comings, E. 1957 Static pressure distribution in the free turbulent jet. J. Fluid Mech. 3, 1–16.Google Scholar
Naumann, A. 1953 Luftwiderstand von Kugeln bei hohen Unterschallgeschwindigkeiten. Allgem. Wärmetechnic 4, 217–221.Google Scholar
Pope, A. & Harper, J. J. 1966 Low Speed Wind Tunnel Testing. Wiley.