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Author: Palitha Nalin Wikramanayake
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 222
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Book Description
Author: Palitha Nalin Wikramanayake
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 222
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Book Description
Author: Palitha Nalin Wikramanayake
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 0
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Book Description
Author: A. J. Grass
Publisher:
ISBN:
Category : Marine sediments
Languages : en
Pages : 82
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Book Description
Author: Jorgen Fredsoe
Publisher: World Scientific Publishing Company
ISBN: 9814365688
Category : Technology & Engineering
Languages : en
Pages : 390
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Book Description
This book treats the subject of sediment transport in the marine environment, covering transport of noncohesive sediment by waves and currents in- and outside the surf zone. It can be read independently, but a background in hydraulics and basic wave mechanics is required.The primary aim of the book is to describe the physical processes of sediment transport and how to represent them in mathematical models. The book can be divided in two main parts; in the first, the relevant hydrodynamic theory is described. This part contains a review of elementary theory for water waves, chapters on the turbulent wave boundary layer and the turbulent interaction between waves and currents, and finally, surf zone hydrodynamics and wave driven currents.The second part covers sediment transport and morphological development.The part on sediment transport introduces the basic concepts (critical bed shear stress, bed load, suspended load and sheet layer, near-bed concentration, effect of sloping bed); it treats suspended sediment in waves and current and in the surf zone, and current and wave-generated bed forms. Finally, the modelling of cross-shore and long-shore sediment transport is described together with the development of coastal profiles and coastlines.
Author: Thomas G. Drake
Publisher: Vicksburg MS : Coastal Engineering Research Center
ISBN:
Category : Geology
Languages : en
Pages : 44
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Book Description
Author: Palitha Nalin Wikramanayake
Publisher:
ISBN:
Category : Ocean currents
Languages : en
Pages : 570
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Book Description
Author: Benoît Camenen
Publisher:
ISBN:
Category : Inlets
Languages : en
Pages : 252
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Book Description
The Coastal Inlets Research Program (CIRP) is developing predictive numerical models for simulating the waves, currents, sediment transport, and morphology change at and around coastal inlets. Water motion at a coastal inlet is a combination of quasi-steady currents such as river flow, tidal current, wind-generated current, and seiching, and of oscillatory flows generated by surface waves. Waves can also create quasi-steady currents, and the waves can be breaking or non-breaking, greatly changing potential for sediment transport. These flows act in arbitrary combinations with different magnitudes and directions to mobilize and transport sediment. Reliable prediction of morphology change requires accurate predictive formulas for sediment transport rates that smoothly match in the various regimes of water motion. This report describes results of a research effort conducted to develop unified sediment transport rate predictive formulas for application in the coastal inlet environment. The formulas were calibrated with a wide range of available measurements compiled from the laboratory and field and then implemented in the CIRP's Coastal Modeling System. Emphasis of the study was on reliable predictions over a wide range of input conditions. All relevant physical processes were incorporated to obtain greatest generality, including: (1) bed load and suspended load, (2) waves and currents, (3) breaking and non-breaking waves, (4) bottom slope, (5) initiation of motion, (6) asymmetric wave velocity, and (7) arbitrary angle between waves and current. A large database on sediment transport measurements made in the laboratory and the field was compiled to test different aspects of the formulation over the widest possible range of conditions. Other phenomena or mechanisms may also be of importance, such as the phase lag between water and sediment motion or the influence of bed forms. Modifications to the general formulation are derived to take these phenomena into account. The.
Author: Jørgen Fredsøe
Publisher:
ISBN:
Category : Sediment transport
Languages : en
Pages : 280
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Book Description
Author: L. C. van Rijn
Publisher:
ISBN:
Category : Coastal sediments
Languages : en
Pages : 716
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Book Description
Author: Johan C. Winterwerp
Publisher: Elsevier
ISBN: 0080473733
Category : Science
Languages : en
Pages : 577
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Book Description
This book is an introduction to the physical processes of cohesive sediment in the marine environment. It focuses on highly dynamic systems, such as estuaries and coastal seas. Processes on the continental shelf are also discussed and attention is given to the effects of chemistry, biology and gas.The process descriptions are based on hydrodynamic and soil mechanic principles, which integrate at the soil-water interface. This approach is substantiated through a classification scheme of sediment occurrences in which distinction is made between cohesive and granular material. Emphasis is also placed on the important interactions between turbulent flow and cohesive sediment suspensions, and on the impact of flow-induced forces on the stability of the seabed. An overview of literature on cohesive sediment dynamics is presented and a number of new developments are highlighted, in particular in relation to floc formation, settling and sedimentation, consolidation, bed failure and liquefaction and erosion of the bed. Moreover, it presents a summary on methods and techniques to measure the various sediment properties necessary to quantify the various parameters in the physical-mathematical model descriptions. A number of examples and case studies have been included.
