Scaling of velocity profiles for depth-limited open channel flows over simulated rigid vegetation

Using the plane mixing layer analogy, a length scale is proposed to normalize velocity profiles for vegetated open channel flows. The new scaling is an improvement over those based on the logarithmic, velocity-defect, and power laws in collapsing the velocity profiles, which include measurements c...

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書目詳細資料
Main Authors: Cheng, Nian-Sheng, Nguyen, Hoai Thanh, Tan, Soon Keat, Shao, Songdong
其他作者: School of Civil and Environmental Engineering
格式: Article
語言:English
出版: 2013
在線閱讀:https://hdl.handle.net/10356/96825
http://hdl.handle.net/10220/11632
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機構: Nanyang Technological University
語言: English
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總結:Using the plane mixing layer analogy, a length scale is proposed to normalize velocity profiles for vegetated open channel flows. The new scaling is an improvement over those based on the logarithmic, velocity-defect, and power laws in collapsing the velocity profiles, which include measurements conducted in this study and also those reported in the literature for a variety of flow and vegetation configurations. An eddy viscosity model is also developed to justify the scaling argument. This study is limited to rigid vegetation submerged in depth-limited flows, in which the flow depth is no greater than twice the vegetation height.