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 3 - WATER ENGINEERING AND CIVILIZATION : Experiment and Numerical Simulation Study on Hydraulic Characteristics of the Spillway Jet Nappe
Experiment and Numerical Simulation Study on Hydraulic Characteristics of the Spillway Jet Nappe
Author : Hongcheng Xue, Mingjun Diao, Shangyi Dai and Xiaolong Yuan
Physical model test and numerical simulation are used to study the hydraulic characteristics of the jet nappe of a spillway. The jet nappe from continuous flip bucket adopted in the original design which produced serious scouring to downstream bed and left bank slope, is modified into a beveled bucket with sidewall diffused to relieve the scouring problem. RNG k?e turbulent model and VOF method were applied to simulate the water-air two-phase jet nappe from the beveled flip bucket to a plunge pool. The calculated shape of water tongue, horizontal length, incidence velocity of the jet nappe, and the velocity distribution of downstream are in good agreement with the data obtained in experiment results. It concludes that the jet nappe from beveled bucket with sidewall diffused can be fully spread on cross direction and fallen into the middle of the river so as to reduce the scouring to downstream bed and bank slope. Furthermore, numerical simulation can replace model experiment effectively to some extent, it also can provide some data for engineering optimal design.
File Size : 968,334 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 3 - WATER ENGINEERING AND CIVILIZATION
Date Published : 18/07/2016
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