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Turbulent open channel flow, sediment erosion and sediment transport

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Book Series: Dissertationsreihe am Institut für Hydromechanik des Karlsruher Instituts für Technologie / Karlsruher Institut für Technologie (KIT), Institut für Hydromechanik ISSN: 14394111 ISBN: 9783866449008 Year: Volume: 2012,1 Pages: XXXII, 154 p. DOI: 10.5445/KSP/1000029253 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: General and Civil Engineering
Added to DOAB on : 2019-07-30 20:01:58
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This thesis aims to contribute to a better understanding of turbulent open channel flow, sediment erosion and sediment transport. The thesis provides an analysis of high-fidelity data from direct numerical simulation of (i) open channel flow over an array of fixed spheres, (ii) open channel flow with mobile eroding spheres, (iii) open channel flow with sediment transport of many mobile spheres. An immersed boundary method is used to resolve the finite-size particles.

Selected Papers from the 14th Estuarine and Coastal Modeling Conference

ISBN: 9783038423621 9783038423638 Year: Pages: VIII, 412 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Hydraulic Engineering
Added to DOAB on : 2017-04-18 12:12:22
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The 14th Estuarine and Coastal Modeling Conference provided a venue for commercial, academic, and government scientists and engineers from around the world to present and discuss the latest results and techniques in applied estuarine and coastal modeling. Prospective authors were invited to submit papers on a wide range of topic areas, including:Coastal ResiliencyPollutant Transport and Water Quality PredictionModeling Techniques and Sensitivity StudiesModel AssessmentModeling Specific Estuarine and Coastal SystemsModel Output Visualization and Analysis TechniquesWave and Sediment Transport ModelingModeling of Chemicals and FloatablesOil Spill Transport and Fate ModelingInverse MethodsFacility Siting and CSO StudiesData Assimilation TechniquesNowcast/Forecast Modeling SystemsCoupled Models of Terrestrial, Atmospheric, Coastal SystemsModeling Systems with Strong Buoyancy ForcingRisk AnalysisThis Special Issue presents a selection of papers from the conference; the papers give insight, both into current research and commercial developments, and highlight areas where further research or engineering studies are required.

The formation of patterns in subaqueous sediment

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Book Series: Dissertationsreihe am Institut für Hydromechanik, Karlsruher Institut für Technologie / Karlsruher Institut für Technologie (KIT), Institut für Hydromechanik ISSN: 14394111 ISBN: 9783731505327 Year: Volume: 2016,1 Pages: XXIII, 142 p. DOI: 10.5445/KSP/1000054986 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: General and Civil Engineering
Added to DOAB on : 2019-07-30 20:01:58
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This book investigates the formation of subaqueous patterns by means of high-fidelity numerical simulations which resolve all the relevant scales of the flow and the sediment bed. This is required to provide a space- and time-resolved information on the flow field and the sediment bed. Secondly, detailed analysis of the generated data allows to address the different governing mechanisms involved in the formation of patterns as well as to access the validity of various existing models.

Sediment Transport in Coastal Waters

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ISBN: 9783038978442 9783038978459 Year: Pages: 284 DOI: 10.3390/books978-3-03897-845-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Oceanography
Added to DOAB on : 2019-04-25 16:37:17
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The interface of 440,000 km long coastline in the world is subject to global change, with an increasing human pressure (land use, buildings, sand mining, dredging) and increasing population. Improving our knowledge on involved mechanisms and sediment transport processes, monitoring the evolution of sedimentary stocks and anticipating changes in littoral and coastal zones is essential for this purpose. The special issue of Water on “Sediment transport in coastal waters” gathers thirteen papers which introduce the current revolution in the scientific research related to coastal and littoral hydrosedimentary dynamics, and reflect the diversity of concerns on which research in coastal sediment transport is based, and current trends — topics and preferred methods — to address them.

Keywords

suspended sediment --- sediment transport --- coastal hydraulics --- Mekong --- river plume --- monsoon --- mathematical model --- geochemical map --- particle transfer process --- tidal current --- analysis of variance (ANOVA) --- Cluster analysis --- Mahalanobis’ generalized distances --- Seto Inland Sea --- East Coast Low --- nearshore processes --- coastal erosion --- coastal management --- climate change --- numerical modelling --- Southeast Australia --- soil erosion --- SWAT --- water scarcity --- sediment transport modelling --- Tafna catchment --- North Africa --- suspended sediment --- sediment transport --- lagoon --- geochemistry --- Ni mining --- sediment trap --- hydrodynamics --- New Caledonia --- dry season --- Senegal River delta --- Langue de Barbarie spit --- delta vulnerability --- river-mouth migration --- spit breaching --- ERA hindcast waves --- longshore sediment transport --- Vietnam --- South China Sea --- erosion --- recovery --- storminess --- winter monsoon --- typhoons --- shoreline --- waves forcing --- storms --- resilience --- post-storm recovery --- Bight of Benin --- seasonal cycle --- trend --- sand-mud mixture erosion --- numerical modelling --- non-cohesive to cohesive transition --- remote sensing reflectance --- turbidity --- seagrass beds --- bed shear stress --- fresh water runoff --- oceanic water intrusion --- suspended particulate matter --- aggregates --- flocculation --- biomass --- sediment --- turbidity --- remote-sensing --- MODerate Resolution Imaging Spectroradiometer (MODIS) --- Support Vector Regression (SVR) --- oligotrophic lagoon --- bathymetry --- reflectance --- seabed colour --- coral reef --- New Caledonia --- sediment transport --- cohesive sediments --- non cohesive sediments --- sand --- mud --- coastal erosion --- sedimentation --- morphodynamics --- suspended particulate matter --- bedload

Modeling and Practice of Erosion and Sediment Transport under Change

Authors: --- ---
ISBN: 9783039214310 9783039214327 Year: Pages: 212 DOI: 10.3390/books978-3-03921-432-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 11:49:15
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Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.

Dynamics of the Coastal Zone

Authors: ---
ISBN: 9783039284849 9783039284856 Year: Pages: 182 DOI: 10.3390/books978-3-03928-485-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
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The coastal zone is the host to many human activities, which have significantly increased in the last decades. However, sea level rise and more frequent storm events severely affect beaches and coastal structures, with negative consequences and dramatic impacts on coastal communities. These aspects add to typical coastal problems, like flooding and beach erosion, which already leading to large economic losses and human fatalities. Modeling is thus fundamental for an exhaustive understanding of the nearshore region in the present and future environment. Innovative tools and technologies may help to better understand coastal processes in terms of hydrodynamics, sediment transport, bed morphology, and their interaction with coastal structures. This book collects several contributions focusing on nearshore dynamics, and span among several time and spatial scales using both physical and numerical approaches. The aim is to describe the most recent advances in coastal dynamics.

Marine Structures

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ISBN: 9783039281824 9783039281831 Year: Pages: 210 DOI: 10.3390/books978-3-03928-183-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
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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.

ASTER 20th Anniversary

Authors: ---
ISBN: 9783039286843 / 9783039286850 Year: Pages: 284 DOI: 10.3390/books978-3-03928-685-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-06-09 16:38:57
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The Advanced Thermal Emission and Reflection Radiometer (ASTER) is a research facility instrument on NASA’s Terra spacecraft. We celebrated the 20th anniversary of ASTER’s launch in December 1999. ASTER has been providing high spatial resolution multispectral data in the VNIR, SWIR, and TIR regions, and along-track stereo data. Starting April 2016, ASTER data have been distributed to the public at no cost. Another important and the most popular data set is the ASTER Global DEM, which covers almost the entire land surface at a 30 m grid size. ASTER data have been widely used in a variety of application areas such as land surface mapping and change detection, volcano and other natural hazard monitoring, mineral exploration, and urban heat island monitoring. This Special Issue consists of 12 papers (2 reviews, 9 articles, and 1 technical note) and covers topics including development of new techniques to process ASTER data, calibration activities to ensure long-term consistency of ASTER data, validation of the ASTER data products, and scientific achievements using ASTER data.

Selected Papers from the 15th Estuarine and Coastal Modeling Conference

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ISBN: 9783039212699 9783039212705 Year: Pages: 432 DOI: 10.3390/books978-3-03921-270-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Geography
Added to DOAB on : 2019-08-28 11:21:27
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The 15th Estuarine and Coastal Modeling Conference provides a venue for commercial, academic, and government scientists and engineers from around the world to present and discuss the latest results and techniques in applied estuarine and coastal modeling. Prospective authors are invited to submit papers on a wide range of topic areas, including:• Pollutant Transport and Water Quality Prediction• Coastal Response to Climate Change• Modeling Techniques and Sensitivity Studies• Model Assessment• Modeling Specific Estuarine and Coastal Systems• Visualization and Analysis• Wave and Sediment Transport Modeling• Modeling of Chemicals and Floatables• Oil Spill Transport and Fate Modeling• Inverse Methods• Circulation Modeling• Facility Siting and CSO Studies• Data Assimilation• Nowcast/Forecast Modeling Systems• Modeling Systems with Strong Buoyancy Forcing• Modeling of Coupled Systems• Risk Analysis (Nuclear Reactors, Flood Forecasting)

Keywords

British Columbia --- environmental assessment --- marine construction --- circulation --- numerical model --- sediment model --- tidal current --- wind-driven current --- stratification --- initial dilution zone --- property-carrying particle model --- coupled models --- ecosystem simulation --- biophysical modeling --- Sandusky Bay --- Great Lakes --- tides --- tidal datums --- VDatum --- spatially varying uncertainty (SVU) --- north-east Gulf of Mexico --- Brown Passage --- Chatham Sound --- internal tides --- circulation --- numerical model --- stratification --- barotropic --- baroclinic --- Hood Canal --- floating bridge --- Salish Sea --- hydrodynamics --- Finite-Volume Community Ocean Model (FVCOM) --- circulation --- anthropogenic impact --- zone of influence --- Salish Sea model --- ice modeling --- operational forecast --- FVCOM --- CICE --- hydrodynamic modeling --- Great Lakes --- hydrodynamic numerical model --- H3D --- agriculture --- salt wedge --- climate change --- sea level rise --- river discharge --- channel deepening --- tidal constituent database --- ADvanced CIRCulation model (ADCIRC) --- Eastern North Pacific Ocean (ENPAC) --- coastal ocean modeling --- Gulf of Mexico --- operational nowcast and forecast system --- Finite Volume Community Ocean Model --- water level --- temperature --- salinity --- water quality --- model calibration --- estuary --- eutrophication --- CE-QUAL-W2 --- phytoplankton --- algal growth kinetics --- wave energy --- wind forcing --- large-wave hindcast --- multi-level nested-grid modeling --- CFSR --- NARR --- WaveWatch III --- SWAN --- hydrodynamics --- feasibility assessments --- nearshore restoration --- FVCOM --- Puget Sound --- Salish Sea --- numerical model --- sediment transport --- marine --- short-lived radioisotopes --- wave hindcast --- breakwater --- harbor --- estuary --- SWAN --- MIKE21SW --- unstructured grid --- storm surge --- coastal storm --- flooding --- compound events --- estuarine modeling --- lateral circulation --- tidal currents --- momentum balance --- coastal and estuarine modeling --- ADCIRC --- water level time series --- VDatum --- tidal datums --- statistical interpolation --- spatially varying uncertainty --- non-tidal zones --- marine grid population --- Texas --- western Louisiana --- Gulf of Mexico --- ocean modeling --- cloud computing --- data analysis --- geospatial data visualization

Renewable Energy in Marine Environment

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ISBN: 9783039285280 9783039285297 Year: Pages: 324 DOI: 10.3390/books978-3-03928-529-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
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The effects of human-caused global warming are obvious, requiring new strategies and approaches. The concept of business-as-usual is now no longer beneficial. Extraction of renewable energy in marine environments represents a viable solution and an important path for the future. These huge renewable energy resources in seas and oceans can be harvested, including wind, tide, and waves. Despite the initial difficulties related mostly to the elevated operational risks in the harsh marine environment, newly developed technologies are economically effective or promising. Simultaneously, many challenges remain to be faced. These are the main issues targeted by the present book, which is associated with the Special Issue of Energies Journal entitled “Renewable Energy in Marine Environment”. Papers on innovative technical developments, reviews, case studies, and analytics, as well as assessments, and papers from different disciplines that are relevant to the topic are included. From this perspective, we hope that the results presented are of interest to for scientists and those in related fields such as energy and marine environments, as well as for a wider audience.

Keywords

WEC array --- WEC farm --- PTO system --- PTO system tuning --- linearization --- hydraulic --- WEC-sim --- PTO-sim --- model coupling --- BEM --- NEMOH --- numerical modeling --- numerical coupling --- wave propagation --- MILDwave --- wave–structure interaction --- near field --- far field --- experimental validation --- WECwakes project --- wave energy converter arrays --- turbulence --- turbulence intensity --- turbulence kinetic energy --- ADCP --- site measurements --- time scale --- length scale --- wave–structure interaction --- wave propagation model --- smoothed particle hydrodynamics --- open boundaries --- coupling --- DualSPHysics --- OceanWave3D --- Mild-slope wave propagation model --- MILDwave --- periodic lateral boundaries --- short crested waves --- offshore wind turbines --- large scale experiments --- scour protection damage --- wide-graded materials --- climate change conditions --- optical measurements --- acoustic measurements --- waves-current interaction --- moored floating wave-energy converter --- oscillating water column --- wave flume experiment --- nonlinear wave condition --- 6 degrees of freedom motion --- mooring-line tension --- renewable energy --- marine environment --- wave energy converters --- variable depth effects --- multi-DOF WECs --- design optimization --- end fitting --- unbonded flexible pipe --- sealing performance --- pressure penetration --- temperature --- Caspian Sea --- wind speed --- offshore turbines --- capacity factor --- LCOE --- offshore wind farm --- jacket --- scour --- wave-current interaction --- spatial resolution --- erosion patterns --- sediment transport --- laboratory tests --- ocean energy --- marine energy --- wave energy --- renewable energy --- wave energy converter --- control system --- cost-benefit analysis --- DC collection --- energy economics --- HVDC --- HVAC --- levelized cost of electricity (LCOE) --- offshore wind --- ocean renewable energy --- ocean renewable technologies --- ocean source potential --- Brazilian ocean energy

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