Physical Models and Laboratory Techniques in Coastal Engineering

Author: Steven A. Hughes

Publisher: World Scientific

ISBN: 9789810215415

Category: Science

Page: 568

View: 9465

Laboratory physical models are a valuable tool for coastal engineers. Physical models help us to understand the complex hydrodynamic processes occurring in the nearshore zone and they provide reliable and economic engineering design solutions.This book is about the art and science of physical modeling as applied in coastal engineering. The aim of the book is to consolidate and synthesize into a single text much of the knowledge about physical modeling that has been developed worldwide.This book was written to serve as a graduate-level text for a course in physical modeling or as a reference text for engineers and researchers engaged in physical modeling and laboratory experimentation. The first three chapters serve as an introduction to similitude and physical models, covering topics such as advantages and disadvantages of physical models, systems of units, dimensional analysis, types of similitude and various hydraulic similitude criteria applicable to coastal engineering models.Practical application of similitude principles to coastal engineering studies is covered in Chapter 4 (Hydrodynamic Models), Chapter 5 (Coastal Structure Models) and Chapter 6 (Sediment Transport Models). These chapters develop the appropriate similitude criteria, discuss inherent laboratory and scale effects and overview the technical literature pertaining to these types of models. The final two chapters focus on the related subjects of laboratory wave generation (Chapter 7) and measurement and analysis techniques (Chapter 8).
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Ocean Disposal of Wastewater

Author: Ian R. Wood,Robert G. Bell,D. L. Wilkinson

Publisher: World Scientific

ISBN: 9789812796028

Category: Science

Page: 464

View: 658

This book offers a comprehensive study on the subject of ocean disposal of treated and untreated sewage waste. The early chapters cover the philosophy of outfall design, properties of sewage from developed towns and an overview of water quality regulations in New Zealand, Great Britain and the U.S. Alternative ways of satisfying these regulations are discussed. The book also provides information required to design outfall pipelines and diffusers.
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Advances in Coastal and Ocean Engineering

Author: Philip L. F. Liu

Publisher: World Scientific

ISBN: 9810224109

Category: Technology & Engineering

Page: 276

View: 4802

This volume contains six papers discussing coastal processes, and physical and numerical modeling.In the first paper, Svendsen and Putrevu give an extensive review on the state of understanding of surf-zone hydrodynamics, including subjects such as wave breaking, wave-induced currents, and instability of nearshore currents and infragravity waves. They point out that the most urgent need is to develop an adequate theory for wave breaking and broken waves in the surf zone.One of the methods for studying the complex coastal processes is to perform laboratory experiments. However, physical models are always plagued by scale and laboratory effects, because the coastal process involves many different length and time scales. In the second paper, Kamphuis presents a detailed discussion on the sources and implications of the scale and laboratory effects on physical modeling.The third and the fourth papers are two parts of the discussion on the mathematical modeling of the meso-tidal barrier island coasts. To understand the dynamics of coastal inlet systems, one can either rely on empirical knowledge and construct various forms of empirical and semi-empirical models (Part I), or develop a set of mathematical models based on the physical processes (Part II). Although these models do not provide the details of the dynamics, they give valuable knowledge of the equilibrium-state relationships. de Vriend and Ribberink give a detailed review on two models, Initial Sedimentation/Erosion models and Medium-Term Morphodynamic models. They have also presented many examples of applications.In the fifth paper, Houston gives a brief review on different methods to mitigate beach loss caused by storms or persistent long-term erosion. He then describes, in detail, the method of beach nourishment, which is also called a beach fill. This paper discusses the information that must be collected to design a beach fill and that should be monitored after the completion of the project.The last paper of this volume shifts our attention to the design of offshore structures, such as gravity structures, floating barges and tankers. Chakrabarti discusses the effects of the uniform and shear currents on fixed and floating structures.
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Users Guide to Physical Modelling and Experimentation

Experience of the HYDRALAB Network

Author: Lynne E. Frostick,Stuart J. McLelland,T.G. Mercer

Publisher: CRC Press

ISBN: 1439870519

Category: Technology & Engineering

Page: 272

View: 8257

A Users Guide to Hydraulic Modelling and Experimentation provides a systematic, comprehensive summary of the progress made through HYDRALAB III . The book combines the expertise of many of the leading hydraulic experimentalists in Europe and identifies current best practice for carrying out state-of-the-art, modern laboratory investigations. In addition it gives an inventory and reviews recent advances in instrumentation and equipment that drive present and new developments in the subject. The Guide concentrates on four core areas – waves, breakwaters, sediments and the relatively-new (but rapidly-developing) cross-disciplinary area of hydrodynamics/ecology. Progress made through the ‘CoMIBBS’ component of HYDRALAB III provides the material for a chapter focussed on guidance, principles and practice for composite modelling. There is detailed consideration of scaling and the degree of relevance of laboratory/physical modelling approaches for specific contexts included in each of the individual chapters. The Guide includes outputs from the workshops and several of the innovative transnational access projects that have been supported within HYDRALAB III, as well as the focussed joint research activities SANDS and CoMIBBS. Its primary purpose is to serve as a shared resource to disseminate the outstanding advances achieved within HYDRALAB III but, even more than this, it is a tribute to the human and institutional collaborations that led to and sustained the research advances, the human relationships that were strengthened and initiated through joint participation in the Programme, and the training opportunities that participation provided to the many young researchers engaged in the projects.
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Half Moon Bay, Grays Harbor, Washington

Movable-bed Physical Model Study

Author: Steven A. Hughes

Publisher: N.A

ISBN: N.A

Category: Coast changes

Page: 105

View: 1190

A 1-to-50 scale physical model of Half Moon Bay, Grays Harbor, WA, was constructed at the U.S. Army Engineer Research and Development Center's Coastal and Hydraulics Laboratory in Vicksburg, MS. The purpose of the physical model was to support studies being conducted by the U.S. Army Engineer District, Seattle. Specifically, the model results will be used to assess the potential long-term response of the Half Moon Bay shoreline to expected storm waves and surge levels, provided the breach fill between South Beach and the bay remains intact. The physical model eroded the June 2003 shoreline until a near equilibrium was achieved in the model with the dune recession line closely matching the existing vegetation line. This result indicated Half Moon Bay is approaching an equilibrium shoreline planform shape as it adjusts from an influx of sediment resulting from the 1993 breach. However, scale effects in the physical model related to sand transport mean that the dune recession reached in the model for a constant water level and wave energy is less than what would occur in Half Moon Bay under the same constant conditions. Therefore, some additional erosion of the dune should be expected in the coming years. The physical model did not include the benefits of placing dredged material in Half Moon Bay. The model demonstrated the gravel/cobble transition material is mobile with substantial erosion and transport of the gravel from the area of original placement toward the eastern portion of the bay.
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Breakwaters '99

First International Symposium on Monitoring of Breakwaters : Conference Proceedings : September 8-10, 1999, Pyle Center at the University of Wisconsin, Madison, Wisconsin, United States

Author: Orville T. Magoon,James D. Prehn

Publisher: Amer Society of Civil Engineers

ISBN: 9780784405970

Category: Technology & Engineering

Page: 163

View: 8735

Structural monitoring concerns the structural response and the mechanical properties of the structure and its foundation. This work presents methods and technologies that are used in the structural and environmental monitoring of rubble mound breakwaters. These papers discuss experiences in the field of monitoring breakwaters.
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Coastal Engineering 2006

Proceedings of the 30th International Conference : San Diego, California, USA, 3-8 September 2006

Author: Jane McKee Smith

Publisher: N.A

ISBN: N.A

Category: Coastal engineering

Page: 5324

View: 6867

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Technical Report

Author: Division of Applied Geomechanics,Waterways Experiment Station (U.S.)

Publisher: N.A

ISBN: N.A

Category:

Page: N.A

View: 1793

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Coastal Urban Environment

Author: Ramachandran Ramesh,Sundarajan Ramachandran

Publisher: N.A

ISBN: N.A

Category: Coastal zone management

Page: 232

View: 4826

Transcript of papers with reference to India, from a workshop conducted by Institute of Ocean Management, Anna University, in collaboration with Max Mueller Bhavan, Chennai, and the German Returnees Association, IIT, Madras during 10-12 Oct., 2002.
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Ocean engineering science

Author: Bernard LeMéhauté

Publisher: Wiley-Interscience

ISBN: 9780471528555

Category: Science

Page: 640

View: 4173

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Dimensionsanalyse in der Strömungslehre

Author: Joseph H. Spurk

Publisher: Springer-Verlag

ISBN: 3662015811

Category: Technology & Engineering

Page: 270

View: 4341

Dimensionsbetrachtungen reichen bis in die Anfänge der Mechanik und besonders der Strömungslehre zurück. Zu der Fortentwicklung dieser Wissenschaften und zu dem Er kenntnisfortschritt der Naturwissenschaften allgemein haben Dimensionsbetrachtungen wesentliche Beiträge geliefert und oft richtungsweisend neue Wissensgebiete eröffnet. Leider verdeckt der Hinweis auf dimensions analytisch begründete Ansätze leicht die hin ter diesen Ansätzen stehende geistige Leistung und verführt zur Annahme, daß sich die Mühen neuer Erkenntnisse durch hastige, rezeptartige Anwendungen dimensionsana lytischer Methoden vermeiden ließen. Gescheiterte Ansätze und bittere Enttäuschun gen sind die Folge und einhergehend die Ablehnung dieser Methoden überhaupt. Der leichtfertige Umgang mit Dimensionsbetrachtungen wird durch Lehrbücher gefördert, die Rezepturen in den Vordergrund stellen und an (wohl bekannten) Beispielen zei gen, wie leicht, ans Wunderbare grenzend, sich physikalische Erkenntnisse von tiefer Bedeutung gewinnen lassen. Die formale Dimensionsanalyse kann aber aus einer Pro blemstellung nur die, für die Lösung unwichtige, Information entfernen, die über das Maßsystem eingetreten ist. Das stellt noch keine physikalische Erkenntnis dar. Daher kann die formale Durchführung der Dimensionsanalyse nicht im Vordergrund stehen, zumal diese fast trivial ist. Im Vordergrund steht vielmehr die Durchdringung der ge gebenen Fragestellung, die Abstraktion und Vereinfachung des Problems, die es erst gestattet, die relevanten physikalischen Größen zu erkennen und damit ihre Zahl auf das für die Beschreibung absolut notwendige Minimum zu beschränken. Erst dann ist eine Dimensionsanalyse sinnvoll, weil sie die notwendige Zahl der Veränderlichen wei ter reduziert. Aber dieser Satz der neuen Veränderlichen ist nicht eindeutig.
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International Books in Print

Author: Archie Rugh,Barbara Hopkinson,K G Saur,K G Saur Books,K. G. Saur Verlag GmbH & Company,Irene Izod

Publisher: K G Saur Verlag Gmbh & Co

ISBN: 9783598222894

Category: English imprints

Page: 2500

View: 1272

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Particles in the Coastal Ocean

Author: Daniel R. Lynch,David A. Greenberg,Ata Bilgili,Dennis J. McGillicuddy, Jr,James P. Manning,Alfredo L. Aretxabaleta

Publisher: Cambridge University Press

ISBN: 110706175X

Category: Science

Page: 536

View: 321

The coastal ocean comprises the semi-enclosed seas on the continental shelf, including estuaries and extending to the shelf break. This region is the focus of many serious concerns, including coastal inundation by tides, storm surges or sea level change; fisheries and aquaculture management; water quality; harmful algal blooms; planning of facilities (such as power stations); port development and maintenance; and oil spills. This book addresses modeling and simulation of the transport, evolution and fate of particles (physical and biological) in the coastal ocean. It is the first to summarize the state of the art in this field and direct it toward diverse applications, for example in measuring and monitoring sediment motion, oil spills and larval ecology. This is an invaluable textbook and reference work for advanced students and researchers in oceanography, geophysical fluid dynamics, marine and civil engineering, computational science and environmental science.
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Grenzschicht-Theorie

Author: Hermann Schlichting

Publisher: N.A

ISBN: N.A

Category: Boundary layer

Page: 483

View: 8855

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