Bed Forms Generated in the Laboratory Under an Oscillatory Flow PDF Download
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Author: Marion Robert Carstens
Publisher:
ISBN:
Category : Sand
Languages : en
Pages : 122
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Author: Marion Robert Carstens
Publisher:
ISBN:
Category : Sand
Languages : en
Pages : 122
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Author: Philip Vitale
Publisher:
ISBN:
Category : Frictional resistance (Hydrodynamics).
Languages : en
Pages : 20
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Author: Palitha Nalin Wikramanayake
Publisher:
ISBN:
Category : Continental shelf
Languages : en
Pages : 158
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Author: Liqin Zuo
Publisher: CRC Press
ISBN: 0429794037
Category : Science
Languages : en
Pages : 188
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Book Description
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: Faruk Bhuiyan
Publisher: BoD – Books on Demand
ISBN: 9533073748
Category : Science
Languages : en
Pages : 274
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Book Description
The purpose of this book is to put together recent developments on sediment transport and morphological processes. There are twelve chapters in this book contributed by different authors who are currently involved in relevant research. First three chapters provide information on basic and advanced flow mechanisms including turbulence and movement of particles in water. Examples of computational procedures for sediment transport and morphological changes are given in the next five chapters. These include empirical predictions and numerical computations. Chapters nine and ten present some insights on environmental concerns with sediment transport. Last two contributions deal with two large-scale case studies related to changes in the transport and provenance of glacial marine sediments, and processes involving land slides.
Author: R.A. Jr. Davis
Publisher: Springer Science & Business Media
ISBN: 1461250781
Category : Science
Languages : en
Pages : 692
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Book Description
The zone where land and sea meet is composed of a variety of complex environments. The coastal areas of the world contain a large percentage of its population and are therefore of extreme economic importance. Industrial, residential, and recreational developments, as well as large urban complexes, occupy much of the coastal margin of most highly developed countries. Undoubtedly future expansion in many undeveloped maritime countries will also be concentrated on coastal areas. Accompanying our occupation of coasts in this age of technology is a dependence on coastal environments for transportation, food, water, defense, and recreation. In order to utilize the coastal zone to its capacity, and yet not plunder its resources, we must have extensive knowledge of the complex environments contained along the coasts. The many environments within the coastal zone include bays, estuaries, deltas, marshes, dunes, and beaches. A tremendously broad range of conditions is represented by these environments. Salinity may range from essentially fresh water in estuaries, such as along the east coast of the United States, to extreme hypersaline lagoons, such as Laguna Madre in Texas. Coastal environments may be in excess of a hundred meters deep (fjords) or may extend several meters above sea level in the form of dunes. Some coastal environments are well protected and are not subjected to high physical energy except for occasional storms, whereas beaches and tidal inlets are continuously modified by waves and currents.
Author:
Publisher:
ISBN:
Category : Continental shelf
Languages : en
Pages : 470
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1100
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Author: Carlos Vionnet
Publisher: CRC Press
ISBN: 1482266601
Category : Science
Languages : en
Pages : 1115
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Book Description
Coastal, estuarine, fluvial and submarine morphodynamics encompass some of the leading processes shaping our planet. They stem mainly, but not only, from the interaction of water in motion and movable sediment boundaries, resulting in morphological changes produced by erosion, transport and deposition of sediments that generate a variety of landsca
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 2240
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