Coastal Bottom Boundary Layers And Sediment Transport

Author : Peter Nielsen
Publisher : World Scientific
Page : 356 pages
File Size : 41,5 Mb
Release : 1992
Category : Science
ISBN : 9810204736

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Coastal Bottom Boundary Layers and Sediment Transport by Peter Nielsen Pdf

This book is intended as a useful handbook for professionals and researchers in the areas of Physical Oceanography, Marine Geology, Coastal Geomorphology and Coastal Engineering and as a text for graduate students in these fields. With its emphasis on boundary layer flow and basic sediment transport modelling, it is meant to help fill the gap between general hydrodynamic texts and descriptive texts on marine and coastal sedimentary processes. The book commences with a review of coastal bottom boundary layer flows including the boundary layer interaction between waves and steady currents. The concept of eddy viscosity for these flows is discussed in depth because of its relation to sediment diffusivity. The quasi-steady processes of sediment transport over flat beds are discussed. Small scale coastal bedforms and the corresponding hydraulic roughness are described. The motion of suspended sand particles is studied in detail with emphasis on the possible suspension maintaining mechanisms in coastal flows. Sediment pickup functions are provided for unsteady flows. A new combined convection-diffusion model is provided for suspended sediment distributions. Different methods of sediment transport model building are presented together with some classical models.

Author : Liqin Zuo
Publisher : CRC Press
Page : 188 pages
File Size : 45,5 Mb
Release : 2018-06-19
Category : Science
ISBN : 9780429794032

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Modelling and Analysis of Fine Sediment Transport in Wave-Current Bottom Boundary Layer by Liqin Zuo Pdf

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.

Author : J?rgen Freds?e,Rolf Deigaard
Publisher : World Scientific
Page : 406 pages
File Size : 43,6 Mb
Release : 1992
Category : Science
ISBN : 9810208405

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Mechanics of Coastal Sediment Transport by J?rgen Freds?e,Rolf Deigaard Pdf

This book treats the subject of sediment transport in the marine environment, covering transport of non-cohesive sediment by waves and current in- and outside the surf zone. It can be read independently, but a background in hydraulics and basic wave mechanics is required. It is intended for M.Sc. and Ph.D. students. The primary aim of the book is to describe the physical processes of sediment transport and how to represent them in mathematical models. It does not present a large number of different formulae for the sediment transport rates under various conditions. The book can be divided in two main parts; in the first, the relevant hydrodynamic theory is described; in the second, sediment transport and morphological development are treated. The hydrodynamic 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 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 : Jørgen Fredsøe,Rolf Deigaard
Publisher : Springer Science & Business
Page : 396 pages
File Size : 51,8 Mb
Release : 1992
Category : Science
ISBN : 9810208413

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Mechanics of Coastal Sediment Transport by Jørgen Fredsøe,Rolf Deigaard Pdf

This book treats the subject of sediment transport in the marine environment, covering transport of non-cohesive sediment by waves and current in- and outside the surf zone. The primary aim of the book is to describe the physical processes of sediment transport and how to represent them in mathematical models.

Author : Donald J. P. Swift,David B. Duane,Orrin H. Pilkey
Publisher : Unknown
Page : 684 pages
File Size : 43,6 Mb
Release : 1973
Category : Science
ISBN : UOM:39015001558868

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Shelf Sediment Transport: Process and Pattern by Donald J. P. Swift,David B. Duane,Orrin H. Pilkey Pdf

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.

Author : Paul G. Teleki
Publisher : Unknown
Page : 40 pages
File Size : 46,6 Mb
Release : 1972
Category : Boundary layer
ISBN : UCR:31210025038256

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Wave Boundary Layers and Their Relation to Sediment Transport by Paul G. Teleki Pdf

Author : B Mutlu Sumer,David R Fuhrman
Publisher : World Scientific
Page : 758 pages
File Size : 50,6 Mb
Release : 2020-03-23
Category : Technology & Engineering
ISBN : 9789813234321

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Turbulence In Coastal And Civil Engineering by B Mutlu Sumer,David R Fuhrman Pdf

This book discusses the subject of turbulence encountered in coastal and civil engineering.The primary aim of the book is to describe turbulence processes including transition to turbulence; mean and fluctuating flows in channels/pipes, and in currents; wave boundary layers (including boundary layers under solitary waves); streaming processes in wave boundary layers; turbulence processes in breaking waves including breaking solitary waves; turbulence processes such as bursting process and their implications for sediment transport; flow resistance in steady and wave boundary layers; and turbulent diffusion and dispersion processes in the coastal and river environment, including sediment transport due to diffusion/dispersion.Both phenomenological and statistical theories are described in great detail. Turbulence modelling is also described, and several examples for modelling of turbulence in steady flow and wave boundary layers are presented.The book ends with a chapter containing hands-on exercises on a wide variety of turbulent flows including experimental study of turbulence in an open-channel flow, using Laser Doppler Anemometry; Statistical, correlation and spectral analysis of turbulent air jet flow; Turbulence modelling of wave boundary layer flows; and numerical modelling of dispersion in a turbulent boundary layer, a set of exercises used by the authors in their Masters classes over many years.Although the book is essentially intended for professionals and researchers in the area of Coastal and Civil Engineering, and as a text book for graduate/post graduate students, the contents of the book will, however, additionally provide sufficient background in the study of turbulent flows relevant to many other disciplines, such as Wind Engineering, Mechanical Engineering, and Environmental Engineering.

Author : Ashish J Mehta
Publisher : World Scientific
Page : 1054 pages
File Size : 48,8 Mb
Release : 2022-11-22
Category : Technology & Engineering
ISBN : 9789811257254

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Introduction To Hydraulics Of Fine Sediment Transport, An (Second Edition) by Ashish J Mehta Pdf

This book expounds the hydraulics of fine sediment which is almost ubiquitously found in coastal and estuarine waters, and in rivers, lakes, and reservoirs. Although the basic subject may be categorized as applied marine physics in shallow waters, several physicochemical and biological effects on particulate transport have been addressed.In this second edition most of the chapters have been substantially updated, rewritten, and expanded. Overall, a significant change has also been made throughout by replacing sediment concentration, a unit dependent quantity at the heart of numerous descriptions, measurements, and calculations, with the nondimensional sediment volume fraction. It marks a divergence in the manner in which fine sediment transport data and calculations are conventionally presented.The book is mainly written for civil engineering seniors and graduate students, to offer a comprehensive foundation in hydraulics of fine sediment. The book is also a useful reference for researchers interested in the effects of physical chemistry and biology on fine sediment transport in water and to an extent on coastal and estuarine morphodynamics, sediment transport, port and harbor engineering, and applied shallow watwer marine physics. The book is also recommended reading for those interested in understanding particle transport in water.Related Link(s)

Author : Jørgen Fredsøe,Rolf Deigaard
Publisher : Unknown
Page : 369 pages
File Size : 46,5 Mb
Release : 1995
Category : Electronic
ISBN : OCLC:246031159

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Mechanics of Coastal Sediment Transport by Jørgen Fredsøe,Rolf Deigaard Pdf

Author : Bernard P. Boudreau,Bo Barker Jorgensen
Publisher : Oxford University Press
Page : 430 pages
File Size : 52,8 Mb
Release : 2001-03-22
Category : Science
ISBN : 0199770913

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The Benthic Boundary Layer by Bernard P. Boudreau,Bo Barker Jorgensen Pdf

The benthic boundary layer is the zone of water and sediment immediately adjacent to the bottom of a sea, lake, or river. This zone is of considerable interest to biologists, geochemists, sedimentologists, and engineers because of very strong gradients of energy, dissolved and solid chemical components, suspended matter, and the number of organisms that live there. It is, for example, the sink for anthropogenic substances and the home of microscopic plant life that provides the nutrients that determine fish populations--and ultimately the size of the fisheries. This book of original chapters edited by Professors Boudreau and Jorgensen, both leading researchers in the field, will meet the need for an up-to-date, definitive text/reference on measurements, techniques, and models for transport and biochemical processes in the benthic boundary layer. Each chapter provides a comprehensive review of a selected field, with illustrated examples from the authors' own work. The book will appeal to professionals and researchers in marine biology, marine chemistry, marine engineering, and sedimentology.

Author : Donald Ormond Hodgins,Michael E. Coolen,Environmental Studies Revolving Funds (Canada)
Publisher : Unknown
Page : 418 pages
File Size : 53,7 Mb
Release : 1986
Category : Ocean bottom
ISBN : UCSD:31822016459679

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Bottom Sediment Transport by Donald Ormond Hodgins,Michael E. Coolen,Environmental Studies Revolving Funds (Canada) Pdf

Sediment transport and soil liquefaction under wave loading are major concerns for offshore hydrocarbon developments in Canadian waters. This report presents a state-of-the-art review of five topics concerned with seabed mobility and liquefaction, together with a summary of research priorities to address a number of outstanding problems facing the offshore industry. The review deals with sediment transport produced by waves and currents without structures such as pipelines or platform footings present to modify the flow. Thus such topics as localized scour around structures are not considered.

Author : Liqin Zuo
Publisher : CRC Press
Page : 205 pages
File Size : 53,5 Mb
Release : 2018-06-19
Category : Science
ISBN : 9780429794025

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Modelling and Analysis of Fine Sediment Transport in Wave-Current Bottom Boundary Layer by Liqin Zuo Pdf

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.

Author : Richard E. Meyer
Publisher : Unknown
Page : 480 pages
File Size : 53,6 Mb
Release : 1972
Category : Mathematics
ISBN : UCSD:31822007455496

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Waves on Beaches and Resulting Sediment Transport by Richard E. Meyer Pdf

Author : A. R. M. Nowell,C. D. Hollister
Publisher : Elsevier Publishing Company
Page : 438 pages
File Size : 48,8 Mb
Release : 1985
Category : Science
ISBN : UOM:39015010892795

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Deep Ocean Sediment Transport by A. R. M. Nowell,C. D. Hollister Pdf

Author : Alan W. Niedoroda
Publisher : Unknown
Page : 104 pages
File Size : 46,5 Mb
Release : 1980
Category : Coast changes
ISBN : UIUC:30112075692845

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Shoreface, Surf Zone Sediment Exchange Processes and Shoreface Dynamics by Alan W. Niedoroda Pdf