Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-26T06:35:27.681Z Has data issue: false hasContentIssue false
  • English
  • Français

On flow separation and reattachment around a circular cylinder at critical Reynolds numbers

Published online by Cambridge University Press:  26 April 2006

H. Higuchi ,
H. J. Kim  and
C. Farell
H. Higuchi
Affiliation:
St Anthony Falls Hydraulic Laboratory, Department of Civil & Mineral Engineering, University of Minnesota, Minneapolis, MN 55414, USA
H. J. Kim
Affiliation:
Korea Advanced Institute of Science and Technology, Seoul, Korea
C. Farell
Affiliation:
St Anthony Falls Hydraulic Laboratory, Department of Civil & Mineral Engineering, University of Minnesota, Minneapolis, MN 55414, USA
Get access Rights & Permissions [Opens in a new window]

Abstract

An experimental investigation of the flow around smooth circular cylinders in the Reynolds number range 0.8 × 105 < Re < 2 × 105 is presented. Measured quantities include spectra, spanwise correlations and cross correlations of cylinder pressures and wake-velocity fluctuations, and low-frequency boundary-layer flow direction reversals near separation. The flow motion in the critical range is found to be characterized by intermittent, symmetric boundary-layer reattachments, occurring in cells with a well-defined spanwise structure, accompanying a significant decrease in drag coefficient and a weakening of the vortex shedding.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 200 , March 1989 , pp. 149 - 171
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.)

References

Achenbach, E.: 1968 Distribution of local pressure and skin friction around a circular cylinder in cross-flow up to Re = 5 x 106. J. Fluid Mech. 34, 625–639.Google Scholar
Allen, M. J. & Vincenti, W. G., 1944 Wall interference in a two-dimensional-flow wind tunnel with consideration of the effect of compressibility. NACA Tech. Rep.Google Scholar
Almosnino, D. & Mcalister, K. W., 1984 Water-tunnel study of transition flow around circular cylinders. NASA Tech. Mem. 85879.Google Scholar
Bearman, P. W.: 1969 On vortex shedding from a circular cylinder in the critical Reynolds number region. J. Fluid Mech. 37, 577–585.Google Scholar
Dallman, U. & Schewe, G., 1987 On topological changes of separating flow structures of transition Reynolds numbers. AIAA–87–1266.Google Scholar
Despard, R. A. & Miller, J. A., 1971 Separation in oscillating boundary layer flows. J. Fluid Mech. 47, 21–31.Google Scholar
Dwyer, H. A. & McCroskey, W. J., 1973 Oscillating flow over a cylinder at large Reynolds number. J. Fluid Mech. 61, 753–767.Google Scholar
Farell, C. & Blessman, J., 1983 On critical flow around smooth circular cylinders. J. Fluid Mech. 136, 375–401.Google Scholar
Farell, C. & Fedeniuk, S., 1987 Effect of end plates on the flow around rough cylinders. 7th Int Conf. on Wind Engineering, Aachen, West Germany, pp. 87–98.Google Scholar
Güven, O., Farell, C. & Patel, V. C., 1980 Surface roughness effects on the mean flow past circular cylinders. J. Fluid Mech. 98, 673–701.Google Scholar
Higuchi, H.: 1985 A miniature directional surface-fence gage. AIAA J. 23, 1195–1196.Google Scholar
Humphreys, J. S.: 1960 On a circular cylinder in a steady wind at transition Reynolds numbers. J. Fluid Mech. 9, 603–612.Google Scholar
Kim, H.: 1986 An experimental investigation on the flow around a circular cylinder in the first critical subregion. PhD thesis, University of Minnesota.
Korotkin, A. I.: 1976 The three-dimensionality of the flow transverse to a circular cylinder. Fluid Mechanics-Soviet Research, 5 (2), 96–103.Google Scholar
Perry, A. E., Lim, T. T. & Teh, E. W., 1981 A visual study of turbulent spots. J. Fluid Mech 104, 387–405.Google Scholar
Schewe, G.: 1983 On the force fluctuations acting on a circular cylinder in crossflow from subcritical up to transcritical Reynolds number. J. Fluid Mech. 133, 265–285.Google Scholar
Schewe, G.: 1986 Sensitivity of transition phenomena to small pertubations in flow around a circular cylinder. J. Fluid Mech. 173, 33–46.Google Scholar
Sears, W. R. & Telionis, D. P., 1975 Boundary-layer separation in unsteady flow. SIAM J. Appl. Maths 28, 215–235.Google Scholar
Son, J. S. & Hanratty, T. J., 1969 Velocity gradients at the wall for flow around a cylinder at Reynolds numbers from 5 x 103 to 105. J. Fluid Mech. 35, 353–368.Google Scholar
Sonneville, P.: 1976 Étude de la structure tridimensionnelle des écoulements autour d'un cylindre circulaire. Bull. Direction des Etudes et Recherches Electricité de France, Ser. A, no. 3.Google Scholar
Wei, T. & Smith, C. R., 1986 Secondary vortices in the wake of circular cylinders. J. Fluid Mech. 169, 513–533.Google Scholar