Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-18T23:48:41.365Z Has data issue: false hasContentIssue false
  • English
  • Français

On vortex street wakes

Published online by Cambridge University Press:  28 March 2006

P. W. Bearman
P. W. Bearman
Affiliation:
Cambridge University Engineering Laboratory
Now at the National Physical Laboratory, Teddington, Middlesex.
Get access Rights & Permissions [Opens in a new window]

Abstract

The flow in the wake of a two-dimensional blunt-trailing-edge body was investigated in the Reynolds number range, Reynolds number being referred to base height, 1·3 × 104 to 4·1 × 104. The effects of splitter plates and base bleed on the vortex street were examined. Measurements were made of the longitudinal spacing between vortices and the velocity of the vortices, and compared with values predicted by von Kármán's potential vortex street model. The lateral spacing was estimated by using both the von Kármán and Kronauer stability criteria. A new universal wake Strouhal number is devised, using the value of lateral spacing predicted by the Kronauer stability condition as the length dimension. A correlation of bluff-body data was found when pressure drag coefficient times Strouhal number was plotted against base pressure.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 28 , Issue 4 , 22 June 1967 , pp. 625 - 641
Copyright
© 1967 Cambridge University Press

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.)

References

Bearman, P. W. 1965 J. Fluid Mech. 21, 241–255.
Bearman, P. W. 1966 Agard C.P. no. 4, Separated Flows, pp. 479–508.
Bellhouse, B. J. & Wood, C. J. 1965 J. R. Aero. Soc. 69, 789–791.
Berger, E. 1964 Z. Flugwiss. 12, 41–59.
Fage, A. & Johansen, F. C. 1927 Aero. Res. Coun. Lond. R. & M. no. 1143.
Gerrard, J. H. 1966 J. Fluid Mech. 25, 401–413.
Goldburg, A. & Florsheim, B. H. 1966 Phys. Fluids 9, 45–50.
Kronauer, R. E. 1964 Predicting eddy frequency in separated wakes. Paper presented at the I.U.T.A.M. symposium on concentrated vortex motions in fluids, University of Michigan, Ann Arbor, Michigan, 6-11th July.
Maskell, E. C. 1965 Aero. Res. Coun. Lond. R. & M. no. 3400.
Milne-Thomson, L. M. 1938 Theoretical Hydromechanics. London: Macmillan.
Nash, J. F., Quincey, V. G. & Callinan, J. 1963 Aero. Res. Counc., Lond. Rept. no. 25, 070.
Relf, E. F. & Simmons, L. F. G. 1924 Aero. Res. Coun., Lond. R. & M. no. 917.
Roshko, A. 1954a Nat. Adv. Comm. Aero. Wash. Tech. Note, no. 3168.
Roshko, A. 1954b Nat. Adv. Comm. Aero. Wash. Tech. Note, no. 3169.
Roshko, A. 1961 J. Fluid Mech. 10, 345–356.
Timme, A. & Wille, R. 1957 Jb. schiffbautech. Ges. 51, 215–221.
Wille, R. 1960 Advanc. appl. Mech. 6, 273–287.
Wood, C. J. 1964 J. R. Aero. Soc. 68, 477–482.