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The effects of wake splitter plates on bluff-body flow in the range 104 < R < 5 × 104. Part 2

Published online by Cambridge University Press:  29 March 2006

C. J. Apelt  and
G. S. West
C. J. Apelt
Affiliation:
Department of Civil Engineering, University of Queensland, Brisbane
G. S. West
Affiliation:
Department of Civil Engineering, University of Queensland, Brisbane
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Abstract

The work reported in part 1 has been extended to cover flows past circular cylinders with wake splitter plates having 2 [les ] L/D [les ] 7 and to include flows past normal flat plates with splitter plates having L/D [les ] 3·7. Pressure distributions and wake Strouhal numbers were measured and visualization studies carried out. The results obtained indicate that no further changes would be produced by lengthening the splitter plates beyond the limits tested.

The combined results of parts 1 and 2 provide coherent descriptions of the effects of wake splitter plates for all values of L/D of significance for the two profiles, which are representative of two distinct classes of bluff bodies, viz., those with cross-sections of curvilinear shape for which the flow separation points are not determined uniquely by the geometry and those for which the separation points are fixed.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 71 , Issue 1 , 9 September 1975 , pp. 145 - 160
Copyright
© 1975 Cambridge University Press

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References

Apelt, C. J., West, G. S. & Szewczyk, A. A. 1973 The effects of wake splitter plates on the flow past a circular cylinder in the range 104 R 5 × 104. J. Fluid Mech. 61, 187.Google Scholar
Bearman, P. W. 1965 Investigation of the flow behind a two-dimensional model with a blunt trailing edge and fitted with splitter plates. J. Fluid Mech. 21, 241.Google Scholar
Roshko, A. 1954 On the drag and shedding frequency of two-dimensional bluff bodies. N.A.C.A. Tech. Note, no. 3169.Google Scholar
Simmons, J. E. L. 1974 The relationship between the base pressure on a bluff body and the velocity at separation. Aero. J. 78, 330.Google Scholar