IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Experimental Study of Hydraulic Characteristics on Dovetail-shaped Flip Bucket
Experimental Study of Hydraulic Characteristics on Dovetail-shaped Flip Bucket
Author : Yongting Deng, Jun Deng, Wangru Wei and Xiaoyan Qian
Flip buckets are commonly employed to dissipate energy by discharging flow away from the dam toe into a plunge pool or a river channel. Dovetail-shaped flip bucket is a novel design type to be considered. For its sidewalls pressure is smaller when compared with slit-type flip-bucket, it could effectively reduce the difficulties in design and construction. However, the research of this bucket is at the preliminary stage. This experimental study investigates the hydraulic characteristics of the dovetail-shaped flip bucket. The following items are addressed: (1) configuration of the jet flow including streamwise extension and vertical dispersion of the nappe; (2) takeoff angle characteristics as a function of changes of deflection angle of the bucket; (3) relation between the bucket geometries and horizontal distances of upper and lower nappe profiles; (4) pressure distributions on the bottom board and sidewalls. The results indicate that the dissipation capability of the jet flow is still practical with a smaller parameter R\h , and demonstrate the significant difference between deflection angle and takeoff angle. Additionally, c the effects of the deflection angle ? , the relative notch width B \B and the bucket radius R are in 1 1 agreement with previous results.
File Size : 333,468 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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