Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23992
Title: Rivulet formation on an inclined cylinder and its effects on the near-wake
Authors: Xu, YL 
Zhou, Y
Wang, ZJ
Wang, LY
Issue Date: 2002
Source: ASME International Mechanical Engineering Congress and Exposition, Proceedings, 2002, p. 311-316 (CD-ROM) How to cite?
Abstract: Wind rain tunnel experiments were performed in this paper to investigate the formation of water rivulet on the surface of an inclined stationary cylinder immerged in a uniform wind field and the effects of the rivulet on the near-wake of the cylinder. A digital video camera was used to record the formation of water rivulet for a series of cylinder inclination α, cylinder yaw angle β, incident free-stream wind velocity U ∞, and water flow rate m. The pictures were then analyzed to find the flow pattern and position of rivulet on the surface of the cylinder. A hot wire anemometer was used to measure wind speed near the cylinder, and a spectral analysis was then performed on the recorded data to investigate the effects of water rivulet on the near-wake of the cylinder. It was found that the formation of water rivulet depends on the parameters m, U∞, α, and β significantly. Water rivulets can be formed on the cylinder surface only in the range of 0° ≤ β ≤ 90° for U ∞ = 8 - 15 m/s. Water rivulets seem to locate near flow separation points and move circumferentially. It was also found that fluid dynamics associated with wind-water-structure interaction could be quite different from that without the involvement of water rivulet.
Description: ASME 2002 International Mechanical Engineering Congress and Exposition, IMECE2002, New Orleans, LA, 17-22 November 2002
URI: http://hdl.handle.net/10397/23992
ISBN: 0791836592
9780791836590
DOI: 10.1115/IMECE2002-32173
Appears in Collections:Conference Paper

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