Discharge coefficient of a rectangular labyrinth weir

被引：16
|
作者：
Kabiri-Samani, Abdorreza [1 ]
Borghei, Seyed Mahmood [2 ]
Javaheri, Amir [1 ]
机构：
[1] Isfahan Univ Technol, Dept Civil Engn, Esfahan, Iran
[2] Sharif Univ Technol, Dept Civil Engn, Tehran, Iran
来源：
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-WATER MANAGEMENT | 2013年 / 166卷 / 08期
关键词：
hydraulics & hydrodynamics; river engineering; waterways & canals; OBLIQUE WEIR; FLOW; DESIGN;
D O I：
10.1680/wama.11.00088
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A rectangular labyrinth weir has a very good flood release capacity as well as strong economical and structural advantages. In this study, combined analytical and experimental investigations were undertaken for a rectangular labyrinth weir. The analytical model is based on the synthesis of general weir equations and spatially varied flow dynamic equations. A comprehensive set of experiments led to characterisation of the flow behaviour for low and high heads over the weir and indicated the influences of weir geometry on the release capacity. The results show that this type of weir represents an effective weir alternative and could be five times more efficient than a corresponding traditional broad-crested weir. These types of weirs may thus find great use in water and dam engineering projects. An equation for the free-flow discharge coefficient of a rectangular labyrinth weir is presented.
引用
收藏
页码：443 / 451
页数：9
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