Sediment Transport By Waves And Currents
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Sediment Transport By Waves And Currents
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Author : A. J. Grass
language : en
Publisher:
Release Date : 1981
Sediment Transport By Waves And Currents written by A. J. Grass and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Marine sediments categories.
Mechanics Of Coastal Sediment Transport
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Author : Jørgen Fredsøe
language : en
Publisher: World Scientific Publishing Company
Release Date : 1992-11-02
Mechanics Of Coastal Sediment Transport written by Jørgen Fredsøe and has been published by World Scientific Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-11-02 with Technology & Engineering categories.
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.
Stability Of Tidal Inlets
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Author : P. Bruun
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Stability Of Tidal Inlets written by P. Bruun and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.
Developments in Geotechnical Engineering, 23: Stability of Tidal Inlets: Theory and Engineering focuses on all aspects related to tidal inlets on littoral drift shores where freshwater flow is small or non-existing. The selection first tackles the development and configuration of tidal inlets and inlet hydraulics. Discussions focus on flow dynamics and nearshore transport, combinations of waves and currents, sediment transport and storage in the tidal entrance, offsets of tidal inlets, natural inlet regimen, migration of inlets, and origin of tidal inlets. The manuscript then examines sediment transport in tidal inlets, stability of tidal inlets on littoral drift shores, and design and improvements of coastal inlets. Topics cover ocean entrance, overall stability condition, hydraulic and sedimentary principles, non-scouring channels, transport of sediments in wave agitated waters, and sediment transport by combined wave and current action. The publication explores improvements by structures, including natural bypassing, types of improvement, and bypassing by structures and bypassing plants or arrangements. The selection is a valuable source of data for researchers interested in the stability of tidal inlets.
Waves On Beaches And Resulting Sediment Transport
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Author : R. E. Meyer
language : en
Publisher: Elsevier
Release Date : 2013-09-24
Waves On Beaches And Resulting Sediment Transport written by R. E. Meyer and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-24 with Science categories.
Waves on Beaches and Resulting Sediment Transport documents the proceedings of an Advanced Seminar held in October, 1971, aiming to offer a coherent, interdisciplinary view of the state of physical research in coastal oceanography and the direction in which this subject is moving. The articles range from wave refraction to littoral erosion, and the authors from geologists to mathematicians. The book opens with a study on the characteristics of wave records in the coastal zone. This is followed by separate chapters on sediment transport in beaches; equations for water waves; small-amplitude normal oscillations of a liquid body; and wave behavior near caustics in models and in nature. Subsequent chapters deal with nonlinear wave interaction in a variety of physical phenomena including deep water waves; the study of longshore currents; sediment suspension by periodic waves; forms of sediment accumulation in the beach zone; run-up on beaches; and the wave breaking process in shallow water.
A Unified Sediment Transport Formulation For Coastal Inlet Application
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Author : Benoît Camenen
language : en
Publisher:
Release Date : 2007
A Unified Sediment Transport Formulation For Coastal Inlet Application written by Benoît Camenen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Inlets categories.
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.
Waves Currents And Sediment Transport In The Surf Zone Along Long Straight Beaches
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Author : Yoshimitsu Tajima
language : en
Publisher:
Release Date : 2004
Waves Currents And Sediment Transport In The Surf Zone Along Long Straight Beaches written by Yoshimitsu Tajima and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Beaches categories.
(Cont.) Introducing the predicted near-shore hydrodynamic characteristics, we extend the conceptual bedload and associated suspended load sediment transport models (Mad- sen, 2001) to the surf zone. The extended sediment transport model accounts for breaking wave effects such as an increase of turbulence due to broken waves and change of the momentum force balances due to breaking waves and surface rollers. The model predicted the peaks of longshore sediment transport observed near the shore line and the wave breaking point for plunging breakers.
Shelf Sediment Transport Process And Pattern
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Author : Donald J. P. Swift
language : en
Publisher:
Release Date : 1973
Shelf Sediment Transport Process And Pattern written by Donald J. P. Swift and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Science categories.
This volume contains papers presented in a symposium on Shelf Sediment Transport conducted at the annual meeting of the Geological Society of America held in Washington, D.C., November 1971.
Modelling And Analysis Of Fine Sediment Transport In Wave Current Bottom Boundary Layer
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Author : Liqin Zuo
language : en
Publisher: CRC Press
Release Date : 2018-06-19
Modelling And Analysis Of Fine Sediment Transport In Wave Current Bottom Boundary Layer written by Liqin Zuo and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-19 with Science categories.
The evolution and utilization of estuarine and coastal regions are greatly restricted by sediment problems. This thesis aims to better understand fine sediment transport under combined action of waves and currents, especially in the wave-current bottom boundary layer (BBL). Field observations, experimental data analysis, theoretical analysis and numerical models are employed. Silt-dominated sediments are sensitive to flow dynamics and the suspended sediment concentration (SSC) increase rapidly under strong flow dynamics. This research unveils several fundamental aspects of silty sediment, i.e., the criterion of the incipient motion, the SSC profiles and their phase-averaged parameterization in wave-dominated conditions. An expression for sediment incipient motion is proposed for silt-sand sediment under combined wave and current conditions. A process based intra-wave 1DV model for flow-sediment dynamics near the bed is developed in combined wave-current conditions. The high concentration layer (HCL) was simulated and sensitivity analysis was carried out by the 1DV model on factors that impact the SSC in the HCL. Finally, based on the 1DV model, the formulations of the mean SSC profile of silt-sand sediments in wave conditions were proposed. The developed approaches are expected to be applied in engineering practice and further simulation.
The Mechanics Of Scour In The Marine Environment
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Author : Jorgen Fredsoe
language : en
Publisher: World Scientific Publishing Company
Release Date : 2002-04-22
The Mechanics Of Scour In The Marine Environment written by Jorgen Fredsoe and has been published by World Scientific Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-04-22 with Science categories.
This book treats the subject of local scour around different kinds of marine structures, exposed to waves and/or currents. The first, major part of the book is devoted to marine pipelines, describing in detail all kinds of scour scenarios, and also making recommendations for scour protection. Other kinds of structures considered are single piles (slender or large), groups of piles, complex subsea structures, breakwaters, and seawalls. The scour due to ship propellers is also described. The book deals mainly with the scour in noncohesive sediment but, whenever possible, available literature on the scour in finer sediment has been incorporated. In addition, a chapter on the impact of wave-induced liquefaction is included.The authors' aim is to describe in detail the hydrodynamic processes causing the erosion. With a hydrodynamic understanding, it is easier for the consulting engineer to predict scour in those many cases where physical model tests are not available.
Sediment Transport Dynamics
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Author : Weiming Wu
language : en
Publisher:
Release Date : 2023
Sediment Transport Dynamics written by Weiming Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with River sediments categories.
"This book focuses on the fundamentals of sediment transport in surface waters. It covers sediment properties, open channel flows, sediment particle settling, incipient motion, bed forms, bed load, suspended load, total load, cohesive sediments, water-sediment two-phase flows, hyperconcentrated flows, debris flows, wave-induced sediment transport, turbidity currents, and physical modeling. Besides the primary context of river sedimentation, this book extensively covers sediment transport under coexisting waves and currents in coasts and estuaries, hyperconcentrated and debris flows in rivers, as well as turbidity currents in lakes, reservoirs, channels and the ocean. It includes a chapter on the water-sediment two-phase flow theory, which is considered the basis of many sediment transport models. It introduces some special topics emerged in recent years, such as transport of mixed cohesive and noncohesive sediments, transport of biofilm-coated sediments, and transport of infiltrated sand within gravel and cobble beds. The text merges the classical and new knowledge of sediment transport from various sources in English and non-English literature. It includes important contributions made by many scientists and engineers from all over the world. It balances the breadth, depth, fundamental importance, practical applicability, and future advancement of the covered knowledge. It can be used as a text and reference book. The chapters are arranged in a sequence for teaching purposes. Certain homework problems are prepared, which also highlight the important topics for instructors to select. Solutions to homework problems are available by request"--