BeschreibungThis textbook discusses the fundamental principles of sediment transport in the geophysical context of rivers and is intended as both a course textbook and as a guide for the practical engineer. We begin by describing phenomena such as bed load and suspension transport from a classical perspective by applying the mean wall shear stress approach while additionally incorporating a statistical description of the inherent wall shear stress fluctuations. Concepts from turbulent flow regime are introduced to address the limitations of the classical approach to various aspects of sediment transport, such as for example, the Newtonian description of dense suspensions, or the description of the self-organization processes for developing bed forms, or the prediction of transport in very rough bed conditions. In this context coherent structures and flow separation mechanisms are developed as important new elements, which allow using topological rules for the formulation of transport especially for developing bed forms. Since the most up-to-date research findings in the field are presented, this book serves as both a support in the formulation of academic research programs, and as a practical text for engineers seeking to simulate complex problems or special aspects of sediment transport. This book will therefore be of interest and of use to both students and to the professional scientist.
Inhaltsverzeichnis1 Introduction, 1.2 The phenomenon and its main parameters; 1.3 The topography of a drainage area; 1.4 Modeling the phenomenon; 2. The classical representation of the sediment transport; 2.1 The representation of the flow; 2.2 The classical bed load theories; 3 Turbulence and the statistical aspects of the sediment transport; 3.1 The incipient motion; 3.2 Statistical bed load models; 3.3 Transport in suspension; 3.4 The total sediment transport; 3.5 Critical remarks; 4 Saturation and asymptotic states; 4.1 Sediment transport as a dynamical process; 4.2 Hypotheses of extremum principle; 4.3 The expanded description of grass; 4.4 Limitations; 5 Problematic issues; 5.1 Assumptions and consequences of rheological nature; 5.2 Non-local properties of the flow field; 5.3 Non-linear processes; 6 Scales; 6.1 The river as a system and its hydrological scales; 6.2 The scaling of the turbulent flow; 7 Roughness and roughness elements; 7.1 Similarity consideration in the Range of constant wallshear stress; 7.2 Sand roughness; 7.3 d-roughness; 7.4 Real roughness; 8 Flow-separation, topology and vortical dynamics; 8.1 Flow separation; 8.2 Basics in topology; 8.3 Separation bubbles; 8.4 Vortex tubes and vortex interactions; 9 Fine-sand dynamics; 9.1 Stable beds and incipient motion; 9.2 Sediment stripes as a bed form; 9.3 The arrowhead like bed forms; 9.4 The ripple formation; 9.5 Dunes of fine-sand; 9.6 Antidunes; 10 Mixtures of medium grain sizes; 10.1 Armoring; 10.2 Turbulence dominated sediment transport; 10.3 Sediment transport dominated by separation; 10.4 Induced secondary flows; 10.5 Bed forms due to sorting effects; 11 Gravel beds; 11.1 Transport processes on gravel beds; 11.2 Separation versus turbulence; 11.3 Bed forms in gravel beds; 11.4 Complexity and outlooks; 12 Data and strategies to calculate sediment transport; 12.1 The input parameters; 12.2 Coherent structures;12.3 Turbulent flows; 12.4 Flow with separations; 12.5 Suspended load; 12.6 The significance of experiments for the simulations; 13 Literature; 14 Appendix; 14.1 Albert Einstein's letter of recommendation for his son; 14.2 Tables; 14.3 Graphs; 14.4 Symbols; 15 Subject Index
PressestimmenFrom the reviews:
"Sediment transport is a multidisciplinary science, and proper understanding of the sediment-transport phenomenon in solving real-life problems involves very active collaboration between physicists, engineers, mathematicians, statisticians and geologists. ... The book is very well written with plenty of illustrations. ... I sincerely believe that this book will be extremely helpful for advanced undergraduates, graduates and researchers of sediment transport. I strongly recommend the book for the libraries of all universities/institutions." (Rajat Mazumder, Journal of Sedimentary Research, January, 2007)
"The book discusses the fundamental principles of sediment in the geophysical context of rivers. Different approaches to modeling the sediment transport are presented. ... The book reflects most up-to-date research in the field. It may be used both as a course textbook, and as a guide for practical engineers." (llya A. Chernov, Zentralblatt MATH, Vol. 1105 (7), 2007)
"The study of sediment transport is complex, and in this book the authors aim to bring together the most recent research with which to present the updated theories of sediment transport. ... the book to be a course textbook as well as a manual for engineers. ... On the whole, the book accomplishes what it set out to do: present the most up-to-date theories of sediment transport." (C. E. L. Thompson, Geological Magazine, Vol. 145 (3), 2008)
Untertitel: A Geophysical Phenomenon. 'Fluid Mechanics and Its Applications'. Auflage 2006. Sprache: Englisch.
Verlag: Springer-Verlag GmbH
Erscheinungsdatum: Oktober 2006