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Energy Dissipation in Hydraulic Structures IAHR Monographs Series

Langue : Anglais

Coordonnateur : Chanson Hubert

Couverture de l’ouvrage Energy Dissipation in Hydraulic Structures

Recent advances in technology have permitted the construction of large dams, reservoirs and channels. This progress has necessitated the development of new design and construction techniques, particularly with the provision of adequate flood release facilities. Chutes and spillways are designed to spill large water discharges over a hydraulic structure (e.g. dam, weir) without major damage to the structure itself and to its environment. At the hydraulic structure, the flood waters rush as an open channel flow or free-falling jet, and it is essential to dissipate a very signifi cant part of the flow kinetic energy to avoid damage to the hydraulic structure and its surroundings. Energy dissipation may be realised by a wide range of design techniques. A number of modern developments have demonstrated that such energy dissipation may be achieved (a) along the chute, (b) in a downstream energy dissipator, or (c) a combination of both.

The magnitude of turbulent energy that must be dissipated in hydraulic structures is enormous even in small rural and urban structures. For a small storm waterway discharging at a 4 m3/s mm high drop, the turbulent kinetic energy flux per unit time is 120 kW! At a large dam, the rate of energy dissipation can exceed tens to hundreds of gigawatts; that is, many times the energy production rate of nuclear power plants. Many engineers have never been exposed to the complexity of energy dissipator designs, to the physical processes taking place and to the structural challenges. Several energy dissipators, spillways and storm waterways failed because of poor engineering design. It is believed that a major issue affecting these failures was the lack of understanding of the basic turbulent dissipation processes and of the interactions between free-surface aeration and flow turbulence.

In that context, an authoritative reference book on energy dissipation in hydraulic structures is proposed here. The book contents encompass a range of design techniques including block ramps, stepped spillways, hydraulic jump stilling basins, ski jumps and impact dissipators.

1. Introduction: Energy dissipators in hydraulic structures
H. Chanson

2. Energy dissipation at block ramps
S. Pagliara and M. Palermo

3. Stepped spillways and cascades
H. Chanson, D.B. Bung and J. Matos

4. Hydraulic jumps and stilling basins
H. Chanson and R. Carvalho

5. Ski jumps, jets and plunge pools
M. Pfister and A.J. Schleiss

6. Impact dissipators
B.P. Tullis and R.D. Bradshaw

7. Energy dissipation: Concluding remarks
H. Chanson

Subject index
Hubert CHANSON is Professor in Hydraulic Engineering and Applied Fluid Mechanics at the University of Queensland since 1990. His research interests include design of hydraulic structures, experimental investigations of two-phase flows, coastal hydrodynamics, water quality modelling, environmental management and natural resources. In 1999 he was awarded a Doctor of Engineering from the University of Queensland for outstanding research achievements in gas-liquid bubbly flows. Hubert CHANSON has been active also as consultant for both governmental agencies and private organisations. He is the main author of six books.

Date de parution :

Ouvrage de 168 p.

17.4x24.6 cm

Disponible chez l'éditeur (délai d'approvisionnement : 13 jours).

Prix indicatif 104,37 €

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