A Unified Sediment Transport Formulation for Coastal Inlet Application

A Unified Sediment Transport Formulation for Coastal Inlet Application PDF 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.

A Unified Sediment Transport Formulation for Coastal Inlet Application

A Unified Sediment Transport Formulation for Coastal Inlet Application PDF Author: Benoît Camenen
Publisher:
ISBN:
Category : Inlets
Languages : en
Pages : 252

Get Book

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.

Beach-Inlet Interaction and Sediment Management

Beach-Inlet Interaction and Sediment Management PDF Author: Ping Wang
Publisher: Cambridge University Press
ISBN: 110848882X
Category : Nature
Languages : en
Pages : 371

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Book Description
Comprehensive exploration of the processes that shape beaches and tidal inlets, and how to manage these environments systematically.

The Proceedings Of The Coastal Sediments 2015

The Proceedings Of The Coastal Sediments 2015 PDF Author: Jun Cheng
Publisher: World Scientific
ISBN: 981468998X
Category : Technology & Engineering
Languages : en
Pages : 3129

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Book Description
This Proceedings contains over 260 papers on cutting-edge research presented at the eighth international Symposium on Coastal Sediment Processes, held May 11 - 15, 2015, in San Diego, California, USA. This technical specialty conference was devoted to promoting an interdisciplinary exchange of state-of-the-art knowledge among researchers in the fields of coastal engineering, geology, oceanography, and related disciplines, with the theme of Understanding and Working with Nature.Focusing on the physical aspects of the sediment processes in various coastal environments, this Proceedings provides findings from the latest research and newest engineering applications. Sessions covered a wide range of topics including barrier islands, beaches, climate and sea level, cohesive and noncohesive sediments, coastal bluffs, coastal marsh, dredged sediments, inlet and navigation channels, regional sediment management, river deltas, shore protection, tsunamis, and vegetation-sediment interaction. Several special sessions included: Relevant science for changing coastlines: A Tribute to Gary Griggs; North Atlantic Coast Comprehensive Study and post-super-storm Sandy work; long-term coastal evolution; barrier islands of Louisiana; sea-level rise and super storms in a warming world; predicting decadal coastal geomorphic evolution; and contrasting Pacific coastal behavior with El Niño Southern Oscillation (ENSO), are also featured.

Coastal Structures 2011

Coastal Structures 2011 PDF Author: Shigeo Takahashi
Publisher: World Scientific
ISBN: 9814412228
Category : Technology & Engineering
Languages : en
Pages : 1592

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Book Description
Coastal Structures are undergoing renewal and innovation to better serve the needs of our society, from environmental co-existence and habitat enhancement to risk management. The CSt2011 conference is the sixth in a series that highlights coastal disaster preparedness and ocean utilization in a changing climate. The conferences have frequently yielded milestone works and highly cited references in the field. Contents:Volume 1:THESEUS-Coastal Risks in a Changing ClimateSea Level RiseWave Overtopping SimulatorCoastal Structure ProjectNumerical SimulationsOcean EnergyRubble Mound & Berm BreakwatersMovable StructuresWave-Structure InteractionWave ForceWave Runup and OvertoppingRubble Mound Breakwater & Wave TransmissionProbabilistic Design & Life Cycle EvaluationWave & Vertical Breakwater InteractionVolume 2:Artificial BlocksStability of BlocksNumerical ModelingNumerical Wave-Structure InteractionWave-Seabed-Structure InteractionCoastal EnvironmentStorm DisasterDesign Wave & Storm SurgeGeotextile & Concrete MattressConstruction & RehabilitationCase StudiesTsunami Wave ForceTsunami Prevention MeasuresTsunami Simulation & ObservationShore ProtectionErosion & Sediment TransportGeotechnical DesignPoster Sessions Readership: Graduates and researcher in coastal engineering, ocean engineering, civil engineering and environmental engineering.Keywords:Coastal Structure;Storm;Tsunami;Coastal Disaster;Ocean EnergyKey Features:Multidisciplinary topics from coastal disaster prevention to ocean energy utilizationNewest research results at the forefront of the fieldMany world-reknowned authors

Morphodynamic Model for Predicting Beach Changes Based on Bagnold's Concept and Its Applications

Morphodynamic Model for Predicting Beach Changes Based on Bagnold's Concept and Its Applications PDF Author: Takaaki Uda
Publisher: BoD – Books on Demand
ISBN: 1789849454
Category : Science
Languages : en
Pages : 210

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Book Description
The authors have developed models for predicting beach changes applicable to various problems on real coasts. One of them is the contour-line-change model to predict long-term beach changes caused by the imbalance in longshore sand transport, which is a kind of N-line model. Because the calculation of the nearshore current is not needed in this model, and the computational load is small, it has an advantage in the prediction of long-term topographic changes on an extensive coast. However, the handling of boundary conditions becomes difficult when offshore coastal structures are constructed in a complicated manner, and in this regard the so-called 3D model has an advantage. Taking this point into account, the authors developed a morphodynamic model (BG model) by applying the concept of the equilibrium slope and the energetics approach, in which depth changes on 2D horizontal grids are calculated.

Sandy Beach Morphodynamics

Sandy Beach Morphodynamics PDF Author: Derek Jackson
Publisher: Elsevier
ISBN: 0081029284
Category : Science
Languages : en
Pages : 816

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Book Description
Sandy beaches represent some of the most dynamic environments on Earth and examining their morphodynamic behaviour over different temporal and spatial scales is challenging, relying on multidisciplinary approaches and techniques. Sandy Beach Morphodynamics brings together the latest research on beach systems and their morphodynamics and the ways in which they are studied in 29 chapters that review the full spectrum of beach morphodynamics. The chapters are written by leading experts in the field and provide introductory level understanding of physical processes and resulting landforms, along with more advanced discussions. Includes chapters that are written by the world’s leading experts, including the latest up-to-date thinking on a variety of subject areas Covers state-of-the-art techniques, bringing the reader the latest technologies/methods being used to understand beach systems Presents a clear-and-concise description of processes and techniques that enables a clear understanding of coastal processes

Marine Structures

Marine Structures PDF Author: Erkan Oterkus
Publisher: MDPI
ISBN: 3039281828
Category : Technology & Engineering
Languages : en
Pages : 210

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Book Description
Structural mechanics is an important field of engineering. The main goal of structural mechanics is to ensure that structures are safe and durable so that catastrophic situations can be prevented, which can otherwise cause loss of life, environmental pollution and financial losses. Depending on the uses of the structure and the conditions that the structure is subjected to, special treatment may be required for the analysis. Specifically, marine structures are subjected to harsh environmental conditions due to the marine environment, which can cause several different damage mechanisms including fatigue and corrosion. This book on “Marine structures” considers a wide range of areas related to marine structures and provides a compilation of numerical and experimental studies related to “Marine structures” research.

River Sedimentation

River Sedimentation PDF Author: Silke Wieprecht
Publisher: CRC Press
ISBN: 1317225317
Category : Science
Languages : en
Pages : 282

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Book Description
Sediment dynamics in fluvial systems is of great ecological, economic and human-health-related significance worldwide. Appropriate management strategies are therefore needed to limit maintenance costs as well as minimize potential hazards to the aquatic and adjacent environments. Human intervention, ranging from nutrient/pollutant release to physical modifications, has a large impact on sediment quantity and quality and thus on river morphology as well as on ecological functioning. Truly understanding sediment dynamics requires as a consequence a multidisciplinary approach.River Sedimentation contains the peer-reviewed scientific contributions presented at the 13th International Symposium on River Sedimentation (ISRS 2016, Stuttgart, Germany, 19-22 September 2016), and includes recent accomplishments in theoretical developments, numerical modelling, experimental laboratory work, field investigations and monitoring as well as management methodologies.

 PDF Author:
Publisher: World Scientific
ISBN:
Category :
Languages : en
Pages : 913

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Book Description


Homotopy-Based Methods in Water Engineering

Homotopy-Based Methods in Water Engineering PDF Author: Manotosh Kumbhakar
Publisher: CRC Press
ISBN: 1000893359
Category : Technology & Engineering
Languages : en
Pages : 471

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Book Description
Most complex physical phenomena can be described by nonlinear equations, specifically, differential equations. In water engineering, nonlinear differential equations play a vital role in modeling physical processes. Analytical solutions to strong nonlinear problems are not easily tractable, and existing techniques are problem-specific and applicable for specific types of equations. Exploring the concept of homotopy from topology, different kinds of homotopy-based methods have been proposed for analytically solving nonlinear differential equations, given by approximate series solutions. Homotopy-Based Methods in Water Engineering attempts to present the wide applicability of these methods to water engineering problems. It solves all kinds of nonlinear equations, namely algebraic/transcendental equations, ordinary differential equations (ODEs), systems of ODEs, partial differential equations (PDEs), systems of PDEs, and integro-differential equations using the homotopy-based methods. The content of the book deals with some selected problems of hydraulics of open-channel flow (with or without sediment transport), groundwater hydrology, surface-water hydrology, general Burger’s equation, and water quality. Features: Provides analytical treatments to some key problems in water engineering Describes the applicability of homotopy-based methods for solving nonlinear equations, particularly differential equations Compares different approaches in dealing with issues of nonlinearity