Hostname: page-component-7dd5485656-zlgnt Total loading time: 0 Render date: 2025-10-31T01:54:55.427Z Has data issue: false hasContentIssue false
  • English
  • Français

Flow past short circular cylinders with two free ends

Published online by Cambridge University Press:  26 April 2006

M. M. Zdravkovich ,
V. P. Brand ,
G. Mathew  and
A. Weston
M. M. Zdravkovich
Affiliation:
Department of Aeronautical and Mechanical Engineering, University of Salford, Salford M5 4WT, UK
V. P. Brand
Affiliation:
Department of Aeronautical and Mechanical Engineering, University of Salford, Salford M5 4WT, UK
G. Mathew
Affiliation:
Department of Aeronautical and Mechanical Engineering, University of Salford, Salford M5 4WT, UK Present address: Arthur Andersen & Co., The Information Consultancy, Chicago, Illinois, USA.
A. Weston
Affiliation:
Department of Aeronautical and Mechanical Engineering, University of Salford, Salford M5 4WT, UK
Get access Rights & Permissions [Opens in a new window]

Abstract

Preliminary tests have been carried out on short circular cylinders with both ends free. Drag force is measured across the range 6 × 104 < Re < 2.6 × 105 for cylinders of length to diameter ratio L/D between 1 and 10. The effect of hemispherical ends is also investigated. A kind of periodic vortex shedding is found in the range 2 < L/D < 8. The oil-film surface flow visualization shows that the ‘eyes’ near the free ends (regions of low pressure) gradually disappear as L/D is reduced to 3. An asymmetric flow pattern is established for very short cylinders (L/D < 3). The detailed measurements of pressure distribution along and across models shows asymmetries of minimum and base pressures along the span. The asymmetric flow produces yawing and rolling moments which are also measured.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 203 , June 1989 , pp. 557 - 575
Copyright
© 1989 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.)

Article purchase

Temporarily unavailable

References

Ayoub, A. & Karamcheti, K., 1982 An experiment on the flow past a finite circular cylinder at high subcritical and supercritical Reynolds numbers. J. Fluid Mech. 118, 1–26.Google Scholar
Etzold, F. & Fiedler, H., 1976 The near-wake structure of a cantilevered cylinder in cross flow. Z. Flugwiss. 24, 77–82 (in English).Google Scholar
Farivar, D. J.: 1981 Turbulent uniform flow around cylinders of finite length. AIAA J. 19, 275–281.Google Scholar
Gould, R., Raymer, W. G. & Ponsford, P. J., 1968 Wind tunnel tests on chimneys of circular cross section at high Reynolds number. Proc Symp Wind Effects on Buildings and Structures, Loughborough (ed. D. J. Johns), vol. 2, Paper 10.
Kawamura, T., Hiwada, M., Hibino, T., Mabuchi, I. & Kumada, M., 1984a Flow around a finite circular cylinder on a flat plate. Bull. JSME 27, 2142–2151.Google Scholar
Kawamura, T., Hiwada, M., Hibino, T., Mabuchi, I. & Kumada, M., 1984b Heat transfer from a finite circular cylinder on the flat plate. Bull. JSME 27, 2430–2439.Google Scholar
Muttray, H.: 1932 The experimental facts of drag without lift. Handbuch der Experimentalphysik, Vol. 4.2 (ed. L. Schiller), 521, pp. 318–321. Berlin (in German).
Okamoto, T. & Yagita, M., 1973 The experimental investigation on the flow past a circular cylinder of finite length placed normal to the plane surface in a uniform stream. Bull. JSME 16, 805–814.Google Scholar
Sakamoto, H. & Arie, M., 1983 Vortex shedding from a rectangular prism and a circular cylinder placed vertically in a turbulent boundary layer. J. Fluid Mech. 126, 147–165.Google Scholar
Slaouti, A. & Gerrard, J. H., 1981 An experimental investigation of the end effects on the wake of a circular cylinder towed through water at low Reynolds number. J. Fluid Mech. 112, 297–314.Google Scholar
Taneda, S.: 1952 Studies on wake vortices. Rep 1, Research Institute of Applied Mechanics, Kyu-Shu University, Vol 1, No 4, pp. 131–143.Google Scholar
Wieselsberger, C.: 1982 On the drag of circular cylinders. Phys. Z. 23, 219–224 (in German).Google Scholar
Zdravkovich, M. M.: 1977 Review of flow interference between two circular cylinders in various arrangements. Trans ASME I: J Fluids Engng 99, 618–633.Google Scholar
Zdravkovich, M. M.: 1983 Flow around two circular cylinders forming a cross. J. Fluid Mech. 128, 231–246.Google Scholar
Zdravkovich, M. M.: 1988 Conceptual overview of laminar and turbulent flows past smooth and rough circular cylinders. Proc. Intl Colloq. on Bluff Body Aerodynamics and Its Applications, J. Wind Engng (Japan Assoc Wind Engng), Tokyo, No 37, pp. 93–102.Google Scholar