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http://dx.doi.org/10.17820/eri.2017.4.4.245

Experimental Analysis of Flow Characteristics and Bed Changes Over Oblique Weirs  

Jang, Chang-Lae (Department of Civil Engineering, Korea National University of Transportation)
Kim, Gi Jung (Department of Civil Engineering, Korea National University of Transportation)
Publication Information
Ecology and Resilient Infrastructure / v.4, no.4, 2017 , pp. 245-254 More about this Journal
Abstract
In this study, the flow characteristics and bed changes in the upstream and downstream of weirs with the variation of the weir angels are investigated quantitatively through the laboratory experiments. As the angle of weir increases, the effective weir length decreases. Delta is developed by the sediments inflow upstream and migrates downstream. Delta migration speed decreases as it approaches to the weir upstream, and the size is getting big. As the dimensionless weir length increases, the dimensionless wave length decreases at the downstream of the weir. However, the dimensionless bar height decreases. The dimensionless wavelength increases with the bar height downstream from the weir.
Keywords
Bar; Delta; Effective weir length; Oblique weir;
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