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The formation of elliptical wakes

Published online by Cambridge University Press:  28 March 2006

Yung-Huang Kuo  and
Lionel V. Baldwin
Yung-Huang Kuo
Affiliation:
Fluid Dynamics and Diffusion Laboratory, College of Engineering, Colorado State University, Fort Collins, Colorado Present address: Department of Civil Engineering, Louisiana State University, Baton Rouge.
Lionel V. Baldwin
Affiliation:
Fluid Dynamics and Diffusion Laboratory, College of Engineering, Colorado State University, Fort Collins, Colorado
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Abstract

The wakes formed behind sharp-edged, bluff, elliptical bodies have elliptical cross-sections, but the major axis of the wake is aligned with the minor axis of the body. This effect was observed in both mean velocity and turbulent intensity data in wakes throughout the range of the experiment, from several body diameters to distances of 250 diameters downstream of the body. The turbulent energy in the wake flow near the body displayed a periodicity which was correlated using a Strouhal number. Over the Reynolds-number range from 8 × 103 to 7 × 104, the Strouhal number depended only on the body eccentricity.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 27 , Issue 2 , 2 February 1967 , pp. 353 - 360
Copyright
© 1967 Cambridge University Press

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