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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50653

Title: Mean and Turbulent Properties of Neutrally Buoyant Round Jet in Wave Environment
Authors: Shih-Chun Hsiao
Tai-Wen Hsu
Jian-Feng Lin
and Kuang-An Chang
Contributors: 國立臺灣海洋大學:河海工程學系
Date: 2011-05
Issue Date: 2018-10-19T08:04:43Z
Publisher: Journal of Waterway, Port, Coastal, and Ocean Engineering
Abstract: Abstract: An experimental study of a turbulent round jet discharged into a regular wave field is presented. The particle image velocimetry (PIV) technique was employed to measure instantaneous velocity fields of the flow. Quantitative mean and turbulence properties were obtained using ensemble- and phase-averaged methods. Both the jet potential core region and self-similar region were measured. Three different wave heights were used to examine the effect of wave steepness on the jet properties. Measurements were also taken at three different phases to examine the wave phase effect. Experimental results demonstrate that the mean jet width, turbulence intensity, and Reynolds stress increased significantly when the jet was acted on by the waves. In addition, the jet mean kinetic energy decreased whereas the turbulent kinetic energy increased when the jet was under the waves, indicating an increase in turbulence. The wave phase has an insignificant effect on the both the mean and turbulence properties. The turbulent kinetic energy budget in the self-similar region at different wave conditions was also examined. It was found that the turbulent production, advection, and dissipation terms all increase with the increase of the wave height.
Relation: 137(3) pp.109-122
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50653
Appears in Collections:[河海工程學系] 期刊論文

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