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An experiment on the flow past a finite circular cylinder at high subcritical and supercritical Reynolds numbers

Published online by Cambridge University Press:  20 April 2006

Alfred Ayoub  and
K. Karamcheti
Alfred Ayoub
Affiliation:
Joint Institute for Aeronautics and Acoustics, Department of Aeronautics and Astronautics, Stanford University, California 94305, U.S.A.
K. Karamcheti
Affiliation:
Joint Institute for Aeronautics and Acoustics, Department of Aeronautics and Astronautics, Stanford University, California 94305, U.S.A.
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Abstract

The complicated flow in the tip region of a finite circular cylinder in uniform cross flow has been examined at the Reynolds numbers 0·85 × 105, 1·8 × 105, and 7·7 × 105. Simultaneous measurements of the surface-pressure and wake-velocity fluctuations have revealed the existence of a shedding regime in the tip region that is distinct from the one prevailing on the main body of the cylinder. In particular, this regime can be unstable and intermittent, can have a cellular structure in the wake, or can be subcritical when the main flow is supercritical.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 118 , May 1982 , pp. 1 - 26
Copyright
© 1982 Cambridge University Press

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