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Erosion and sedimentation, second edition

The second edition of Prof. Julien’s well-known book has the identical contents as the first edition published in 1995, but an increase from 280 to 371 pages. Among the relatively few books available in this field of river engineering, this work is particularly user-friendly, given the clear and concise statements at the introduction of all chapters, the excellent artwork supporting understanding of the material and the exercises for furthering the learning process. Prof. Julien is to be congratulated for this excellent work, therefore. The book author is well known in the field of river engineering with experiences both in hydraulic modelling and in basic research. The book includes the following chapters: (1) Introduction, (2) Physical properties and dimensional analysis, (3) Mechanics of sediment-laden flows, (4) Particle motion in inviscid fluids, (5) Particle motion in Newtonian fluids, (6) Turbulent velocity profiles, (7) Incipient motion, (8) Bedforms, (9) Bedload, (10) Suspended load, (11) Total load, and (12) Reservoir sedimentation. The book ends with two Appendices, Bibliography and an Index. When comparing the two editions, it is obvious that all figures were redrawn, of which the quality meets top standards. Further, the second edition is divided into a theoretical part in usual white colour and an application part in grey, allowing us to distinguish visually better the portions, depending on the purpose of learning basics, or applying the knowledge to examples. The author has selected a modern way of offering his knowledge to readers by this approach. It is also observed that the second edition has a large number of additional exercises, whereas the theoretical part has remained more or less as in edition 1. The basic formulations of fluid mechanics are provided as equations of motion in Cartesian, cylindrical and spherical coordinates. However, these are not applied using numerical approaches but are simplified to basic problems of fluid mechanics, including, for example, flow around a sphere, its drag and fall velocity or laboratory measurement of the particle size. In Chapter 6, the standard knowledge on turbulent flow is presented for both smooth and rough plane boundaries, and then the deviations from the logarithmic velocity profile including the log-wake law, the modified log-wake law and the sidewall correction method are highlighted. Chapter 7 summarizes the facts known on incipient sediment motion, including the approach of Shields and its expansion to sediment mixtures. The interaction with turbulent coherent flow structures is not considered. Bedforms are discussed in Chapter 8, including a large accumulation of findings made at the author’s university from the 1960s. In Chapters 9–11, the most important equations describing bedload, suspended load and total load are introduced, yet one might have expected a description of their Journal of Hydraulic Research Vol. 48, No. 6 (2010), pp. 836–837 doi:10.1080/00221686.2010.534278