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Experimental Study on Wake Flow of an Inclined Square Cylinder
conference contribution
posted on 2023-05-23, 07:10 authored by Lou, X, Zhou, T, Hao, Z, Jiao, H, Cheng, LThis study aims to examine the validity of the independence principle (IP) and the vortex characteristics for a square cylinder with different inclination angles (á) 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 When á is larger than 40°, the IP is no longer valid.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 á is smaller than about 30°, indicating the validity of the IP over this angle range.
History
Publication title
Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering ConferenceEditors
ISOPEPagination
630-637ISBN
978-1-880653-94-4Department/School
School of EngineeringPublisher
ISOPEPlace of publication
Rhodes, GreeceEvent title
Twenty-second (2012) International Offshore and Polar Engineering ConferenceEvent Venue
Rhodes, GreeceDate of Event (Start Date)
2012-06-17Date of Event (End Date)
2012-06-22Rights statement
Copyright 2012 by the International Society of Offshore and Polar Engineers (ISOPE)Repository Status
- Restricted