Abstract

In the past decade, a number of books were written for hydraulic engineering, including Hydraulics of Open Channel Flow by Sergio Montes 1998 , Dam Hydraulics by Daniel L. Vischer and Willi H. Hager 1998 , Hydraulic Structures by Pavel Novak et al. 2001 , and The Hydraulics of Stepped Chutes and Spillways by Hubert Chanson 2002 . The present book is a welcomed addition to engineering knowledge because a number of topics relevant in the design of hydraulic structures related to dam engineering are highlighted, and issues developed mainly in India are now internationally available. The book contains four sections: “Spillways,” with 18 chapters; “Energy Dissipators,” with 7; “Cavitation and Air Entrainment” with 3; and “Hydraulic Modeling,” with 1 chapter. Section one covers over half of the book; whereas, Section two has 25%, Section three has 10%, and Section four contains 30 pages. Section one opens with introductionary chapters relating to spillways in general and their selection for a particular spillway type in terms of site conditions, design flood, and cost. The relevant knowledge on the Ogee spillways is presented in Chapter 4 including crest shape, discharge characteristics, and crest pressures. The side channel spillway is highlighted in Chapter 5, with the determination of the free surface profile, shock waves due to chute contractions and bends, and the effect of piers. Chapter 6 relates to stepped spillways with the possible three flow regimes, the hydraulic features of skimming flow, air entrainment, and energy dissipation. Siphon spillways are treated in Chapter 7 with a description of the hydraulic action, design considerations and the discharge capacity, effects of waves, and the stability aspects of those structures. Shaft spillways are then described in Chapter 8, with particular attention to the free intake flow type, both the water and air entrainment characteristics along the shaft and the downstream tunnel, air release systems, and the main aspects of vortex drops. In Chapter 9, labyrinth spillways are accounted for in terms of the various design parameters, discharge characteristics, and practical issues. Tunnel spillways are investigated in Chapter 10, yet the important aspects of the air-water flow are not discussed. Chapter 11 relates to the free jet and straight drop spillways with a particular emphasis on the air entrainment characteristics of falling water jets, the use of nappe splitters, and the development of plunge-pool scour. Fuse plugs are described in Chapter 12, including some design guidelines in terms of discharge. Chapter 13 relates to spillways used for flood and sediment disposal and Chapter 14 to unlined spillways, thereby accounting for rock erosion. Inflatable rubber weirs are treated in Chapter 15 by accounting for hydraulic and the structural design aspects. Means to protect spillways from overtopping are discussed in Chapter 16, and spillway crest gates receive attention in

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