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On the force fluctuations acting on a circular cylinder in crossflow from subcritical up to transcritical Reynolds numbers

Published online by Cambridge University Press:  20 April 2006

Günter Schewe
Günter Schewe
Affiliation:
DFVLR-Institut für Aeroelastik (AVA), D-3400 Göttingen, Germany
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Abstract

Force measurements were conducted in a pressurized wind tunnel from subcritical up to transcritical Reynolds numbers 2.3 × 104 [les ] Re [les ] 7.1 × 106 without changing the experimental arrangement. The steady and unsteady forces were measured by means of a piezobalance, which features a high natural frequency, low interferences and a large dynamic range. In the critical Reynolds-number range, two discontinuous transitions were observed, which can be interpreted as bifurcations at two critical Reynolds numbers. In both cases, these transitions are accompanied by critical fluctuations, symmetry breaking (the occurrence of a steady lift) and hysteresis. In addition, both transitions were coupled with a drop of the CD value and a jump of the Strouhal number. Similar phenomena were observed in the upper transitional region between the super- and the transcritical Reynolds-number ranges. The transcritical range begins at about Re ≈ 5 × 106, where a narrow-band spectrum is formed with Sr(Re = 7.1 × 106) = 0.29.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 133 , August 1983 , pp. 265 - 285
Copyright
© 1983 Cambridge University Press

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References

Achenbach, E. 1968 Distribution of local pressure and skin friction around a circular cylinder in cross-flow up to Re = 5 × 106. J. Fluid Mech. 34, 625.Google Scholar
Achenbach, E. & Heinecke, E. 1981 On vortex shedding from smooth and rough cylinders in the range of Reynolds numbers 6 × 103 to 5 × 106. J. Fluid Mech. 109, 239.Google Scholar
Bearman, P. W. 1969 On vortex shedding from a circular cylinder in the critical Reynolds number regime J. Fluid Mech. 37, 577.Google Scholar
Drescher, H. 1956 Messung der auf querangeströmte Zylinder ausgeübten zeitlich veränderten Drücke Z. Flugwiss. 4, 17.Google Scholar
Försching, H., Melzer, E. & Schewe, G. 1981 Ein neuer Windkanal für gebäudeaerodynamische und -aeroelastische Untersuchungen bei Reynoldszahlen bis 107. DFVLR-AVA Rep. IB 232-81 J 02, Göttingen.Google Scholar
Haken, H. 1982 Synergetik – eine Einführung. Springer. [English edition: Synergetics – An Introduction. Springer, 1978.]
James, W. D., Paris, S. W. & Malcolm, G. N. 1980 Study of viscous crossflow effects on circular cylinder at high Reynolds numbers AIAA J. 18, 1066.Google Scholar
Jones, G. W., Cincotta, J. & Walker, W. 1969 Aerodynamic forces on a stationary and oscillating circular cylinder at high Reynolds numbers. NASA TR R-300.Google Scholar
Kamiya, N., Suzuki, S. & Nishi, R. 1979 On the aerodynamic force acting on circular cylinder in the critical range of the Reynolds number. AIAA Paper 79-1475, Williamsburg.Google Scholar
Kraemer, K. 1964 Druckverteilungsmessungen an Kreiszylindern mit Beachtung dreidimensionaler Randstörungen. Mitt. MPI f. Strömungsforschung und AVA, Göttingen no. 32.Google Scholar
Landauer, R. 1978 Stability in the dissipative steady state. Phys. Today (November), p. 23.Google Scholar
Morkovin, M. V. 1964 Flow around circular cylinder – a kaleidoscope of challenging fluid phenomena. In Proc. Symp. on Fully Separated Flows (ed. A. G. Hansen), p. 102. ASME.
Roshko, A. 1961 Experiments on the flow past a circular cylinder at very high Reynolds number J. Fluid Mech. 10, 345.Google Scholar
Roshko, A. 1970 On the aerodynamic drag of cylinders at high Reynolds numbers. U.S.-Japan Research Seminar on Wind Loads on Structures, University of Hawaii, Oct. 1970.
Schewe, G. 1982 A multicomponent balance consisting of piezoelectric force transducers for a high-pressure windtunnel Conf. Proc. Sensor & Systems 82, vol. 2, Pasadena (USA), 18–20.5.82; and Tech. Messen 49, 447 (German version).
Tani, J. 1964 Low-speed flows involving bubble separations Prog. Aero. Sci. 5, 70.Google Scholar
Wieselsberger, C. 1923 Versuche über den Luftwiderstand gerundeter und kantiger Körper. Ergebnisse Aerodyn. Versuchsanstalt Göttingen (ed. L. Prandtl), II. Lieferung, p. 23.