Hydraulic Design of Side Weirs
Title | Hydraulic Design of Side Weirs PDF eBook |
Author | R. W. P. May |
Publisher | Thomas Telford |
Pages | 164 |
Release | 2003 |
Genre | Diversion weirs |
ISBN | 9780727731678 |
Side weirs are widely used to divert or discharge flows from reservoirs, rivers, artificial channels and sewers. The hydraulic behaviour of this type of weir is complex and difficult to predict accurately using simple methods and the diversity of applictions of side weirs has the potential to complicate guidance. This manual covers the fundamental hydraulic principles and discusses the practical design issues separately for each main strcuture type.
Hydraulic Design of Labyrinth Weirs
Title | Hydraulic Design of Labyrinth Weirs PDF eBook |
Author | Henry T. Falvey |
Publisher | American Society of Civil Engineers |
Pages | 162 |
Release | 2003-01 |
Genre | Technology & Engineering |
ISBN | 9780784406311 |
A labyrinth weir is a series of duckbill spillways for controlling the flow of water over a dam or channel. This slim volume compares the crest shapes used on weirs, identifies considerations for designing downstream chutes and dealing with sedimentation, explores general guidelines for parameter se
Design of Diversion Weirs
Title | Design of Diversion Weirs PDF eBook |
Author | Rozgar Baban |
Publisher | |
Pages | 250 |
Release | 1995 |
Genre | Technology & Engineering |
ISBN |
Design of Diversion Weirs Small Scale Irrigation in Hot Climates Rozgar Baban In most developing countries, it is now realised that the most important factor in the success of the agricultural sector is the sustainability of irrigation projects. Diversion weirs are the most important components of these projects. The aim of this book is to teach step by step how to design diversion weirs. It encompasses all technical subjects required: site investigation, hydrological, hydraulic and structural analysis. Many numerical examples show how to relate engineering theories to applications. Cover illustration A diversion weir in Tanzania constructed by the farmers with technical assistance from the government.
Hydraulic Design Criteria
Title | Hydraulic Design Criteria PDF eBook |
Author | |
Publisher | |
Pages | 302 |
Release | 1977 |
Genre | Hydraulic engineering |
ISBN |
Physical Modeling for Side-Channel Weirs
Title | Physical Modeling for Side-Channel Weirs PDF eBook |
Author | Ka-Leung Lee |
Publisher | |
Pages | 177 |
Release | 2002 |
Genre | |
ISBN |
In a previous project, experiments were conducted to determine the hydraulic characteristics of embankment-shaped side weirs in trapezoidal channels with 2.5H:1V side slopes. The present project built on the work done in the previous project. Data from the previous project was reanalyzed, and computations of water surface profiles along side weirs were used to evaluate the effects of channel lope and roughness on weir hydraulics. It was concluded that both the slope and roughness of the main channel should be included explicitly in the calculations of side-weir flows. The physical model was modified to have 4H:1V side slopes, and additional experiments were conducted on side-weir flows. These experiments included both the characteristics of the weir flows and the size and hydraulic effects of the separation zone created in the main channel by the side-weir diversion flow. Based on the experimental results, it is recommended that side-weir discharges be calculated using integration along the weir length and empirical coefficients for the discharge per unit of weir length rather than bulk coefficients for the entire discharge. Empirical formulas are presented for embankment-shaped side weirs. Limited experiments were conducted to evaluate the effects of channel flow on the hydraulics of culverts used for diversion. The empirical results presented in this report were incorporated into a computational scheme for side diversions. That computational scheme is presented in a companion report ("Side-Diversion Analysis System", CRWR Online Report 02-3).
Hydraulics of flow over side weirs
Title | Hydraulics of flow over side weirs PDF eBook |
Author | Ahmed Moustafa Mohamed El Khashab |
Publisher | |
Pages | |
Release | 1975 |
Genre | |
ISBN |
Hydraulic Design of Stepped Cascades, Channels, Weirs, and Spillways
Title | Hydraulic Design of Stepped Cascades, Channels, Weirs, and Spillways PDF eBook |
Author | Hubert Chanson |
Publisher | |
Pages | 304 |
Release | 1994 |
Genre | Technology & Engineering |
ISBN |
Stepped channels and spillways have been used for more than 2,500 years but recently new construction materials have renewed interest in stepped chutes. The steps significantly increase the rate of energy dissipation taking place on the spillway face and reduce the size of the required downstream energy dissipation basin. Stepped cascades are also used in water treatment plants to enhance the air-water transfer of atmospheric gases and of volatile organic components. This book presents new material on the hydraulic characteristics of stepped chute flows. Two different flow regimes can occur: nappe flow regime for small discharges and flat channel slopes; and skimming flow regime - the hydraulics of each flow regime are described. The book also covers the effects of flow aeration and air bubble entrainment as well as the process of air-water gas transfer taking place above the stepped chute. Practical examples of hydraulic design and a critical review of the risks of accidents and failures with stepped channels makes this book an essential reference tool for professional engineers, postgraduates and researchers in the field.