Hostname: page-component-77c89778f8-9q27g Total loading time: 0 Render date: 2024-07-22T10:57:14.168Z Has data issue: false hasContentIssue false
  • English
  • Français

Vortex shedding from a circular cylinder in moderate-Reynolds-number shear flow

Published online by Cambridge University Press:  19 April 2006

Masaru Kiya ,
Hisataka Tamura  and
Mikio Arie
Masaru Kiya
Affiliation:
Faculty of Engineering, Hokkaido University, Sapporo, 060 Japan
Hisataka Tamura
Affiliation:
Faculty of Engineering, Hokkaido University, Sapporo, 060 Japan
Mikio Arie
Affiliation:
Faculty of Engineering, Hokkaido University, Sapporo, 060 Japan
Get access Rights & Permissions [Opens in a new window]

Abstract

The frequency of vortex shedding from a circular cylinder in a uniform shear flow and the flow patterns around it were experimentally investigated. The Reynolds number Re, which was defined in terms of the cylinder diameter and the approaching velocity at its centre, ranged from 35 to 1500. The shear parameter, which is the transverse velocity gradient of the shear flow non-dimensionalized by the above two quantities, was varied from 0 to 0·25. The critical Reynolds number beyond which vortex shedding from the cylinder occurred was found to be higher than that for a uniform stream and increased approximately linearly with increasing shear parameter when it was larger than about 0·06. In the Reynolds-number range 43 < Re < 220, the vortex shedding disappeared for sufficiently large shear parameters. Moreover, in the Reynolds-number range 100 < Re < 1000, the Strouhal number increased as the shear parameter increased beyond about 0·1.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 101 , Issue 4 , 29 December 1980 , pp. 721 - 735
Copyright
© 1980 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

Hall, G. R. 1967 Interaction of the wake from bluff bodies with an initially laminar boundary layer. A.I.A.A. J. 5, 1386–1392.Google Scholar
Hattori, N., Hatta, K. & Kotake, S. 1973 Experimental study of vortices behind a body. Part 1, Circular cylinder. Trans. Japan Soc. Mech. Eng. 39, 665–673 (in Japanese).Google Scholar
Jordan, S. K. & Fromm, J. E. 1972 Laminar flow past a circle in a shear flow. Phys. Fluids 15 972–976.Google Scholar
Kiya, M. & Arie, M. 1977 An inviscid numerical simulation of vortex shedding from an inclined flat plate in shear flow. J. Fluid Mech. 82, 241–253.Google Scholar
Kotansky, D. R. 1966 The use of honeycomb for shear flow generator. A.I.A.A. J. 4, 1490–1491.Google Scholar
McCroskey, W. J. 1977 Some current research in unsteady fluid dynamics — The 1976 Freeman Scholar Lecture. Trans. A.S.M.E. I, J. Fluids Engng 99, 8–39.Google Scholar
Morkovin, M. V. 1964 Flow around circular cylinder — A kaleidoscope of challenging fluid phenomena. Symp. on Fully Separated Flows (ed. A. G. Hansen), pp. 102–118. New York: A.S.M.E.
Nagata, H., Matsui, T. & Yasuda, H. 1979 Velocity field near an impulsively started circular cylinder. Part 1. Region of potential flow. Trans. Japan Soc. Mech. Eng. 45, 1298–1306 (in Japanese).Google Scholar
Nakaya, C. 1976 Instability of the near wake behind a circular cylinder. J. Phys. Soc. Japan 41, 1087–1088.Google Scholar
Nishioka, M. & Sato, H. 1978 Mechanism of determination of the shedding frequency of vortices behind a cylinder at low Reynolds numbers. J. Fluid Mech. 89, 49–60.Google Scholar
Owen, P. R. & Zienkiewicz, H. K. 1957 The production of uniform shear flow in a wind tunnel. J. Fluid Mech. 2, 521–531.Google Scholar
Roshko, A. 1954 On the development of turbulent wakes from vortex streets. N.A.C.A. Rep. no. 1191.Google Scholar
Tamura, H., Kiya, M. & Arie, M. 1980 Numerical study of viscous shear flow past a circular cylinder. Trans. Japan Soc. Mech. Eng. 46, 555–564 (in Japanese).Google Scholar