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http://dx.doi.org/10.3741/JKWRA.2015.48.8.635

An Experimental Study on the Effect of a Hydraulic Structure on the Three-dimensional Flow in a Meandering Channel  

Lee, Dong Hun (Department of Civil and Environmental Engineering, Hanyang University)
Kim, Su Jin (Department of Civil and Environmental Engineering, Hanyang University)
Kang, Seokkoo (Department of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of Korea Water Resources Association / v.48, no.8, 2015 , pp. 635-645 More about this Journal
Abstract
The objective of this study is to examine the three-dimensional turbulent flows occurring in the meandering channel with presence of a groyne. A series of laboratory experiments are carried out in a meandering channel with trapezoidal cross sections. The channel is a 24.4 m long, 1.5 m wide, and the bottom slope in the longitudinal direction is 0.02. Two cases with and without the groyne are considered in the experiment. Three-dimensional velocity fields are measured using an acoustic Doppler velocimetry (ADV) at approximately sixty locations in each cross section. The measured velocity fields are averaged in time, and the time-averaged flow revealed that the mean velocity magnitude along the outer bank of the channel was reduced significantly and the direction of the primary flow was directed toward the center of the channel due to the presence of the groyne.
Keywords
Groyne; Meandering channel; Bank erosion; Acoustic Doppler velocimeter (ADV); Turbulent flow; Secondary flow;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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