Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-13T01:25:13.243Z Has data issue: false hasContentIssue false

An experimental investigation of the oscillating lift and drag of a circular cylinder shedding turbulent vortices

Published online by Cambridge University Press:  28 March 2006

J. H. Gerrard
Affiliation:
Department of the Mechanics of Fluids, Manchester University

Abstract

The oscillating lift and drag on circular cylinders are determined from measurements of the fluctuating pressure on the cylinder surface in the range of Reynolds number from 4 × 103 to just above 105.

The magnitude of the r.m.s. lift coefficient has a maximum of about 0.8 at a Reynolds number of 7 × 104 and falls to about 0.01 at a Reynolds number of 4 × 103. The fluctuating component of the drag was determined for Reynolds numbers greater than 2 × 104 and was found to be an order of magnitude smaller than the lift.

Type
Research Article
Copyright
© 1961 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

Bingham, H. H., Weimer, D. K. & Griffith, W. 1952 The cylinder and semicylinder in subsonic flow. Princeton Univ. Tech. Rep. II-13.Google Scholar
Cometta, C. 1957 An investigation of the unsteady flow pattern in the wake of cylinders and spheres using a hot-wire probe. Brown Univ. Tech. Rep. WT-21.Google Scholar
Curle, N. 1955 The influence of solid boundaries on aerodynamic sound. Proc. Roy. Soc. A, 231, 505.Google Scholar
Drescher, H. 1947 Model Testing Techniques. II. 6. Measurement of unsteady pressure. AVA monographs D2. (Translation: Aero. Res. Counc. Rep. no. 11, 391.)
Fung, Y. C. 1960 Fluctuating lift and drag acting on a cylinder in a flow at supercritical Reynolds numbers. J. Aerospace Sci. 27, 801.Google Scholar
Gerrard, J. H. 1955 Measurements of the sound from circular cylinders in an air stream. Proc. Phys. Soc. B, 68, 453.Google Scholar
Gerrard, J. H. 1958 Measurements of the fluctuating pressure on the surface of a circular cylinder. Part I. Cylinder of 1 in. diameter. Aero. Res. Counc. Rep. no. 19, 844.Google Scholar
Humphreys, J. S. 1960 On a circular cylinder in a steady wind at transition Reynolds numbers. J. Fluid Mech. 9, 603.Google Scholar
Kuhl et al. 1954 Condenser transmitters and microphones with solid dielectric for air-borne ultrasonics. Acustica, 4, 519.Google Scholar
Lighthill, M. J. 1952 On sound generated aerodynamically. Proc. Roy. Soc. A, 211, 564.Google Scholar
Lighthill, M. J. 1954 On sound generated aerodynamically. Proc. Roy. Soc. A, 222, 1.Google Scholar
Mcgregor, D. M. 1957 An experimental investigation of the oscillating pressures on a circular cylinder in a fluid stream. Univ. Toronto Inst. Aerophys. Tech. Note 14.Google Scholar
Pankhurst, R. C. & Holder, D. W. 1952 Wind Tunnel Technique, Ch. 18. London: Pitman.
Phillips, O. M. 1956 The intensity of Aeolian tones. J. Fluid Mech. 1, 607.Google Scholar
Shaw, R. A. 1951 A preliminary investigation of the acoustic theory of airflow. Low speed wind tunnel tests on an aerofoil and a cylinder. Aero. Res. Counc. Rep. no. 13,795.Google Scholar