Rivulet formation on an inclined cylinder and its effects on the near-wake

You Lin Xu, Y. Zhou, Z. J. Wang, L. Y. Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


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.
Original languageEnglish
Title of host publication5th International Symposium on Fluid Structure Interaction, Aeroelasticity, and Flow Induced Vibration and Noise
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages6
ISBN (Print)0791836592, 9780791836590
Publication statusPublished - 1 Jan 2002

ASJC Scopus subject areas

  • Mechanical Engineering

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