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Fluctuating lift and drag on a long cylinder of square cross-section in a smooth and in a turbulent stream

Published online by Cambridge University Press:  28 March 2006

B. J. Vickery
B. J. Vickery
Affiliation:
School of Civil Engineering, University of Sydney, Australia
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Abstract

The paper presents the results of measurements of fluctuating lift and drag on a long square cylinder. The measurements include the correlation of lift along the cylinder and the distribution of fluctuating pressure on a cross-section. The magnitude of the fluctuating lift was found to be considerably greater than that for a circular cross-section and the spanwise correlation much stronger.

It was found that the presence of large-scale turbulence in the stream had a marked influence on both the steady and the fluctuating forces. The most significant changes were at small angles of attack (%alpha; < 10°) and included a reduction in base suction and a decrease in fluctuating lift of about 50%.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 25 , Issue 3 , July 1966 , pp. 481 - 494
Copyright
© 1966 Cambridge University Press

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