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Experimental Study on Wake Flow of an Inclined Square Cylinder


Lou, X and Zhou, T and Hao, Z and Jiao, H and Cheng, L, Experimental Study on Wake Flow of an Inclined Square Cylinder, Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference, 17-22 June, Rhodes, Greece, pp. 630-637. ISBN 978-1-880653-94-4 (2012) [Refereed Conference Paper]

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Copyright 2012 by the International Society of Offshore and Polar Engineers (ISOPE)

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This study aims to examine the validity of the independence principle (IP) and the vortex characteristics for a square cylinder with different inclination angles () encountering wind flow at Reynolds number (Re) of about 3600. A 1D vorticity probe was used to measure the spanwise vorticity component in a wind tunnel, together with a reference Xprobe located at the edge of the wake to provide a reference signal. By examining the contours of velocity and vorticity components using the phase-averaged method, the dependence of the flow properties on inclination angles was analyzed. The present results show that the three-dimensionality of the wake is enhanced and the vortex shedding strength is weakened with the increase of the cylinder inclination angle. When is larger than 40, the IP is no longer valid. The Strouhal number (StN), obtained using the velocity component normal to the cylinder axis, remains approximately a constant within the experimental uncertainty when is smaller than about 30, indicating the validity of the IP over this angle range.

Item Details

Item Type:Refereed Conference Paper
Keywords:inclined square cylinder; vortex shedding; phaseaveraged method
Research Division:Engineering
Research Group:Civil engineering
Research Field:Structural engineering
Objective Division:Construction
Objective Group:Construction materials performance and processes
Objective Field:Metals
UTAS Author:Jiao, H (Dr Hui Jiao)
ID Code:81979
Year Published:2012
Deposited By:Engineering
Deposited On:2013-01-14
Last Modified:2014-01-08
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