Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-27T15:09:19.417Z Has data issue: false hasContentIssue false
  • English
  • Français

Pressure-fluctuation measurements on an oscillating circular cylinder

Published online by Cambridge University Press:  19 April 2006

P. W. Bearman  and
I. G. Currie
P. W. Bearman
Affiliation:
Department of Aeronautics, Imperial College, London
The experiments were carried out in the Department of Mechanical Engineering, University of Toronto, Canada.
I. G. Currie
Affiliation:
Department of Mechanical Engineering, University of Toronto, Canada
Get access Rights & Permissions [Opens in a new window]

Abstract

Measurements are presented of the fluctuating pressure recorded at a point 90° from the mean position of the forward stagnation point on a circular cylinder oscillating in a water flow. The aspect ratio of the cylinder was 9·5 and the turbulence level in the free-stream was 5·5%. The cylinder Reynolds number was 2·4 × 104 and the cylinder was forced to oscillate transverse to the main flow at amplitudes up to 1·33 cylinder diameters. The reduced velocity was varied over the range 3–18 and the experiments spanned the vortex-shedding lock-in range. Measurements of phase difference between pressure and displacement show that the maximum out-of-phase lift force occurs at an amplitude of about half a diameter. Good agreement is found between measurements on forced and freely oscillating cylinders. A simple potential-flow model gives reasonable predictions of the pressure fluctuations at the body frequency and at twice the body frequency at reduced velocities away from lock-in.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 91 , Issue 4 , 27 April 1979 , pp. 661 - 677
Copyright
© 1979 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. 1968 The flow around a circular cylinder in the critical Reynolds number regime. Nat. Phys. Lab. Aero. Rep. no. 1273.Google Scholar
Bearman, P. W. 1972 Some measurements of the distortion of turbulence approaching a two-dimensional bluff body. J. Fluid Mech. 53, 451–467.Google Scholar
Bishop, R. E. D. & Hassan, A. Y. 1964 The lift and drag forces on a circular cylinder oscillating in a flowing fluid. Proc. Roy. Soc. A 277, 51–75.Google Scholar
Davies, M. E. 1975 Wakes of oscillating bluff bodies. Ph.D. thesis, University of London.
Feng, C. C. 1968 The measurement of vortex induced effects in flow past stationary and oscillating circular and D-section cylinders. M.Sc. thesis, University of British Columbia.
Gerrard, J. H. 1961 An experimental investigation of the oscillating lift and drag of a circular cylinder shedding turbulent vortices. J. Fluid Mech. 11, 244–256.Google Scholar
Hartlen, R. T. & Currie, I. G. 1970 Lift-oscillator model for vortex-induced vibration. Trans. A.S.M.E., J. Engng. Mech. 96, 577–591.Google Scholar
Hunt, J. C. R. 1973 A theory of turbulent flow around two-dimensional bluff bodies. J. Fluid Mech. 61, 625–706.Google Scholar
Jones, C. W. 1968 Unsteady lift forces generated by vortex shedding about a large, stationary and oscillating cylinder at high Reynolds number. A.S.M.E. Paper 68-FE-36.Google Scholar
Loiseau, H. & Szechenyt, E. 1974 Dynamic lift on a cylinder in high Reynolds number flow. Symp. Flow-Induced Structural Vibrations, pp. 755–761. Springer.
McGregor, D. M. 1957 An experimental investigation of the oscillating pressures on a circular cylinder in a fluid stream. Univ. Toronto UTIA Rep. no. 14.Google Scholar
Meier-Windhorst, A. 1939 Flatterschwingungen von Zylindern im gleichmässigen Flüssigkeitsstrom. München Tech. Hochschule, Hydraulisches Inst. Mitt. 9, 1–22.Google Scholar
Novak, M. & Tanaka, H. 1975 Pressure correlations on a vibrating cylinder. Proc. 4th Int. Conf. Wind Effects on Buildings and Structures, pp. 227–232, Cambridge University Press.
Obasaju, E. D. 1977 Pressure fluctuations on stationary and oscillating square section cylinders. Ph.D. thesis, University of London.
Parkinson, G. V. 1974 Mathematical models of flow-induced vibrations of bluff bodies. Symp. Flow-Induced Structural Vibrations, pp. 81–127.Google Scholar
Surry, D. 1972 Some effects of intense turbulence on the aerodynamics of a circular cylinder at subcritical Reynolds number. J. Fluid Mech. 52, 543–563.Google Scholar