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Cohesive Sediments in Open Channels
Control the impact of cohesive sediments on open channels by managing the effects of silt, clay and other sediments in harbors, estuaries and reservoirs. Cohesive Sediments in Open Channels provides you with a practical framework for understanding how cohesive sediments are transported, deposited and eroded. One of the first books to approach the subject from an engineering’s perspective, this book supplies insight into applying hydraulic design as well as understanding the behavior of cohesive sediments in a flow field. Properties and of the nature and the origin of the interparticle physicochemical forces The forces between clay particles and the process of flocculation Processes and dynamics of flocculation and the hydrodynamic behavior of cohesive sediments Transport processes of sediments by flowing water and related equations are first presented and explained Deposition and resuspension of beds deposited from suspension from flowing waters Engineering applications of the hydraulics of cohesive sediments
Engineering Properties and Hydraulic Behavior of Cohesive Sediments
Written by a well-known hydraulic and coastal engineer with more than 40 years of research and practical experience particularly in the areas of sedimentation, stratified flows, and estuarine hydraulics, Engineering Properties and Hydraulic Behavior of Cohesive Sediments presents important fundamental aspects of the hydraulic behavior of these sediments while linking these aspects to a rational approach to the solution of related engineering problems. The author concisely and rigorously presents the fundamentals of clay mineralogy and clay colloid chemistry. He emphasizes the inter-particle physicochemical forces and properties of aggregates, in particular their density, strength, and settli...
Deposition of Fine Sediments in Turbulent Flows
Deposition of fine cohesive sediments in a turbulent flow field was studied in a system of a rotating annular channel and ring. The percentage of the total sediment that a given flow can maintain in suspension depends only on the bed shear stress and is independent of the initial sediment concentration. The percentage (C) of the depositable sediment deposited at time t has been found to vary with time according to the law (C = alpha logt + beta), where the coefficient a is independent of the flow conditions and sediment concentration, while the coefficient b is a function of the bed shear stress only. Both a and b depend on the physiochemical properties of the sediment and the water environment. Deposition rates are proportional to the depositable sediment concentration and inversely proportional to time.
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