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Author: David Gonzalez-Rodriguez (Ph. D.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 133
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Book Description
This thesis analyzes and improves Tajima's (2004) nearshore hydrodynamic model. Tajima's simple model accurately predicts long-shore sediment transport along long, straight beaches, while cross-shore transport predictions differ from observations. A better prediction of cross-shore transport requires improvement of the hydrodynamic model. We first contrast Tajima's model with other hydrodynamic models. To improve the characterization of incident waves, we examine a number of joint probability distributions of wave heights and periods. These distributions are then used to develop a probabilistic wave-by-wave hydrodynamic description based on Tajima's monochromatic wave model. We derive the model governing equations for the unsteady case and detail their numerical implementation. This unsteady model is applied to study the effect of a wave beat normally incident on a plane sloping beach. We use this case to illustrate the relevance of the unsteady generalization to sediment transport calculations.
Author: David Gonzalez-Rodriguez (Ph. D.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 133
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Book Description
This thesis analyzes and improves Tajima's (2004) nearshore hydrodynamic model. Tajima's simple model accurately predicts long-shore sediment transport along long, straight beaches, while cross-shore transport predictions differ from observations. A better prediction of cross-shore transport requires improvement of the hydrodynamic model. We first contrast Tajima's model with other hydrodynamic models. To improve the characterization of incident waves, we examine a number of joint probability distributions of wave heights and periods. These distributions are then used to develop a probabilistic wave-by-wave hydrodynamic description based on Tajima's monochromatic wave model. We derive the model governing equations for the unsteady case and detail their numerical implementation. This unsteady model is applied to study the effect of a wave beat normally incident on a plane sloping beach. We use this case to illustrate the relevance of the unsteady generalization to sediment transport calculations.
Author: Vanesa Magar
Publisher: CRC Press
ISBN: 0429531591
Category : Science
Languages : en
Pages : 185
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Book Description
This reference for engineers, and graduate students covers sediment transport and morphodynamics modelling in nearshore environments. It presents the fundamentals required for understanding the physics and for setting up numerical models. This book covers hydrodynamics of estuarine and coastal environments, properties of seafloor and estuarine composition, and hydroenvironmental interactions; emphasising the inter-relations of small- and large-scale processes, and short- and large-evolution timescales. The focus is, principally, on the application of shallow-water theory, but some surface wave models, and coupling of shallow-water models with surface waves is also discussed to some extent. The guidance on running regional models and the case studies presented are directed to managed realignment, coastal protection, climate change impacts, and offshore renewables. Key features: Gives a balanced review of this rich interdisciplinary area Bridges practical engineering and research Offers both large- and small-scale application Suits graduate students and researchers as well as consulting engineers Vanesa Magar is a senior researcher and associate professor at the Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE) in Baja California, Mexico. She was formerly a researcher and then a lecturer at Plymouth University, UK.
Author: Xiao Li
Publisher:
ISBN:
Category : Sediment transport
Languages : en
Pages : 0
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Book Description
Author: Hans Hanson
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1110
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Book Description
This collection contains 109 papers presented at the Fourth Conference on Coastal Dynamics, held in Lund, Sweden, June 11-15, 2001.
Author: V.C. Lakhan
Publisher: Elsevier
ISBN: 0080526640
Category : Science
Languages : en
Pages : 614
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Book Description
This book unifies and enhances the accessibility of contemporary scholarly research on advances in coastal modeling. A comprehensive spectrum of innovative models addresses the wide diversity and multifaceted aspects of coastal research on the complex natural processes, dynamics, interactions and responses of the coastal supersystem and its associated subsystems. The twenty-one chapters, contributed by internationally recognized coastal experts from fourteen countries, provide invaluable insights on the recent advances and present state-of-the-art knowledge on coastal models which are essential for not only illuminating the governing coastal process and various characteristics, but also for understanding and predicting the dynamics at work in the coastal system. One of the unique strengths of the book is the impressive and encompassing presentation of current functional and operational coastal models for all those concerned with and interested in the modeling of seas, oceans and coasts. In addition to chapters modeling the dynamic natural processes of waves, currents, circulatory flows and sediment transport there are also chapters that focus on the modeling of beaches, shorelines, tidal basins and shore platforms. The substantial scope of the book is further strengthened with chapters concentrating on the effects of coastal structures on nearshore flows, coastal water quality, coastal pollution, coastal ecological modeling, statistical data modeling, and coupling of coastal models with geographical information systems.
Author: Vanesa Magar
Publisher: CRC Press
ISBN: 9781498753463
Category : Coast changes
Languages : en
Pages : 256
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Book Description
"This guide to sediment transport and morphodynamics modelling in nearshore environments covers hydrodynamics of estuarine and coastal environments, seafloor and estuarine composition, and hydro-environmental interactions; emphasising the inter-relations of small and large scale processes. For engineers and graduate students"--
Author: Weiming Wu
Publisher: CRC Press
ISBN: 0203938488
Category : Science
Languages : en
Pages : 509
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Book Description
Comprehensive text on the fundamentals of modeling flow and sediment transport in rivers treating both physical principles and numerical methods for various degrees of complexity. Includes 1-D, 2-D (both depth- and width-averaged) and 3-D models, as well as the integration and coupling of these models. Contains a broad selection
Author: J?rgen Freds?e
Publisher: World Scientific
ISBN: 9789810208400
Category : Science
Languages : en
Pages : 406
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Book Description
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: Yashar Rafati
Publisher:
ISBN:
Category :
Languages : en
Pages : 191
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Book Description
Future work will focus on phase resolving simulation of hydrodynamics and morphodynamics, resolving more scales of the flow field and sediment transport which will reduce the model skill dependency to the calibration coefficients. The future work will also incorporate some environmental applications of the CFD-DEM model by simulating olivine particles in the nearshore which are aimed at capturing CO2 in the shallow beach region and transfer that to the deep ocean.
Author: P.A. Martinez
Publisher: Elsevier
ISBN: 1483287246
Category : Science
Languages : en
Pages : 312
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Book Description
Simulating Nearshore Environments provides computer procedures that realistically represent nearshore processes and supplement or replace trial and error methodology. The procedures simulate transport by waves and fluvial processes on beaches and deltas at various scales. They will aid coastal engineers, oceanographers and sedimentary geologists who focus on both modern and ancient nearshore deposits. How do you simulate nearshore processes using a computer? Can evolving deltaic and coastal environments be simulated realistically by mathematically representing the physical processes that create them? Once the physics and mathematical formulation are described, what are the techniques for transforming them into computer programs? The authors deal with all these aspects and take a "how to" approach in guiding the reader through the development of computer models for simulating sediment transport in coastal environments. In addition to describing the devised computer programs, the book provides a basis for those wishing to formulate their own mathematical models for simulating nearshore processes.
