Relevant bibliographies by topics / Sediment transport. Bed load

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Academic literature on the topic 'Sediment transport. Bed load'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Sediment transport. Bed load"

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Liu, Chun Rong, and Dao Lin Xu. "Bed Load Transport under Complex Flow." Advanced Materials Research 255-260 (May 2011): 3589–93. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3589.

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In this paper, the backward-facing step flow and the sediment transport downstream step were studied experimentally. The critical incipient bed shear velocity is obtained by the results of bed shear velocity and sediment incipient probability. It was found that the critical incipient bed shear velocity depends on the flow structures under the complex flow. By using the new critical incipient bed shear obtained in this paper and calculating the Shields parameter based on instantaneous bed shear velocity, the bed load sediment transport rate downstream step was given. The time history of the bed profile downstream step was calculated by bed load sediment transport rate and compared that obtained by the digital images. Good agreement was observed.
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Samaga, Belle R., Kittur G. Ranga Raju, and Ramchandra J. Garde. "Bed Load Transport of Sediment Mixtures." Journal of Hydraulic Engineering 112, no. 11 (February 1986): 1003–17. http://dx.doi.org/10.1061/(asce)0733-9429(1986)112:11(1003).

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Zanke, Ulrich, and Aron Roland. "Sediment Bed-Load Transport: A Standardized Notation." Geosciences 10, no. 9 (September 16, 2020): 368. http://dx.doi.org/10.3390/geosciences10090368.

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Morphodynamic processes on Earth are a result of sediment displacements by the flow of water or the action of wind. An essential part of sediment transport takes place with permanent or intermittent contact with the bed. In the past, numerous approaches for bed-load transport rates have been developed, based on various fundamental ideas. For the user, the question arises which transport function to choose and why just that one. Different transport approaches can be compared based on measured transport rates. However, this method has the disadvantage that any measured data contains inaccuracies that correlate in different ways with the transport functions under comparison. Unequal conditions also exist if the factors of transport functions under test are fitted to parts of the test data set during the development of the function, but others are not. Therefore, a structural formula comparison is made by transferring altogether 13 transport functions into a standardized notation. Although these formulas were developed from different perspectives and with different approaches, it is shown that these approaches lead to essentially the same basic formula for the main variables. These are shear stress and critical shear stress. However, despite the basic structure of these 13 formulas being the same, their coefficients vary significantly. The reason for that variation and the possible effect on the bandwidth of results is identified and discussed. A further result is the finding that not only shear stress affects bed-load transport rates as is expressed by many transport formulas. Transport rates are also significantly affected by the internal friction of the moving sediment as well as by the friction fluid-bed. In the case of not fully rough flow conditions, also viscous effects and thus the Reynolds number becomes of importance.
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Matoušek, Václav, and Štěpán Zrostlík. "Bed Load Transport Modelling Using Kinetic Theory." E3S Web of Conferences 40 (2018): 05072. http://dx.doi.org/10.1051/e3sconf/20184005072.

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Intense transport of bed load is associated with highconcentrated sediment-laden flow over a plane mobile bed at high bed shear. Typically, the flow exhibits a layered internal structure in which a vast majority of sediment grains is transported through a collisional layer above the bed. Our investigation focuses on steady uniform open-channel flow with a developed collisional transport layer and combines modelling and experiment to relate integral quantities, as the discharge of solids, discharge of mixture, and flow depth with the longitudinal slope of the bed and the internal structure of the flow above the bed. In the paper, flow with the internal structure described by linear vertical distributions of granular velocity and concentration across the collisional layer is analyzed by a model based on the classical kinetic theory of granular flows. The model predicts the total discharge, the discharge of sediment, and the flow depth for given (experimentally determined) bed slope and thickness of collisional layer. The model also predicts whether the intefacial dense layer develops between the bed and the collisional layer and how thick it is. Model predictions are compared with results of intense bed-load experiment carried out for lightweight sediment in our laboratory tilting flume.
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Delis, A. I., and I. Papoglou. "Relaxation approximation to bed-load sediment transport." Journal of Computational and Applied Mathematics 213, no. 2 (April 2008): 521–46. http://dx.doi.org/10.1016/j.cam.2007.02.003.

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Matoušek, Václav, and Štěpán Zrostlík. "Collisional transport model for intense bed load." Journal of Hydrology and Hydromechanics 68, no. 1 (March 1, 2020): 60–69. http://dx.doi.org/10.2478/johh-2019-0027.

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AbstractIn an open channel with a mobile bed, intense transport of bed load is associated with high-concentrated sediment-laden flow over a plane surface of the eroded bed due to high bed shear. Typically, the flow exhibits a layered internal structure in which virtually all sediment grains are transported through a collisional layer above the bed. Our investigation focuses on steady uniform turbulent open-channel flow with a developed collisional transport layer and combines modelling and experiment to relate integral quantities, as the discharge of solids, discharge of mixture, and flow depth with the longitudinal slope of the bed and the internal structure of the flow above the bed.A transport model is presented which considers flow with the internal structure described by linear vertical distributions of granular velocity and concentration across the collisional layer. The model employs constitutive relations based on the classical kinetic theory of granular flows selected by our previous experimental testing as appropriate for the flow and transport conditions under consideration. For given slope and depth of the flow, the model predicts the total discharge and the discharge of sediment. The model also predicts the layered structure of the flow, giving the thickness of the dense layer, collisional layer, and water layer. Model predictions are compared with results of intense bed-load experiment carried out for lightweight sediment in our laboratory tilting flume.
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Cardenas, M., J. Gailani, CK Zeigler, and W. Lick. "Sediment transport in the lower Saginaw River." Marine and Freshwater Research 46, no. 1 (1995): 337. http://dx.doi.org/10.1071/mf9950337.

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A study of the resuspension, deposition and transport of sediments and the resulting changes in bathymetry in the lower part of the Saginaw River in Michigan has been made. The numerical model used in this study consists of a two-dimensional, vertically integrated, time-dependent hydrodynamic and transport model coupled with a three-dimensional, time-dependent model of the dynamics of the sediment bed and its properties. Transport of sediment as suspended load and bed load was included in the analysis. In the numerical calculations, curvilinear coordinates were used. For verification of the model, results of numerical calculations of changes in the thickness of the sediment bed due to time-varying flow events were compared with bathyrnetric measurements taken at nine transects on the river on 28 August 1991 and 13 May 1992. From the transect measurements, from measurements of flow rates and sediment concentrations, and from the numerical modelling, a reasonably accurate description of the sediment transport and the resulting bathymetric changes has been made. The calculations and observations show that resuspension/deposition, bed load, and slumping are significant factors in changing the bathymetry. It is also shown that the largest flows are responsible for most of the sediment erosion and deposition and must therefore be understood and considered in detail. An approximate procedure for making long-term (1 to 25 year) calculations is presented and discussed. This procedure greatly reduces the required computer time but still maintains the required accuracy for the prediction of sediment and contaminant transport and fate.
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Wu, Weiming, and Qianru Lin. "A MULTIPLE-SIZED TRANSPORT FORMULA FOR NONUNIFORM SEDIMENTS UNDER CURRENT AND WAVES." Coastal Engineering Proceedings 1, no. 33 (December 14, 2012): 34. http://dx.doi.org/10.9753/icce.v33.posters.34.

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Nonuniform sediment transport exhibits difference from uniform sediment, even when the mean grain size is the same for both cases. The hiding, exposure, and armoring among different size fractions in the nonuniform bed material may significantly affect sediment transport, morphological change, bed roughness, wave dissipation, etc. It is necessary to develop multiple-sized sediment transport capacity formula to improve the accuracy and reliability of coastal analysis tools. The Wu et al. (2000) formula, which was developed for river sedimentation, is herein extended to calculate multiple-sized sediment transport under current and waves for coastal applications. This formula relates bed-load transport to the grain shear stress and suspended-load transport to the energy of the flow system. It considers the effect of bed material size composition in the hiding and exposure correction factor, which is omitted in many other existing formulas. Methods have been developed in this study to determine the bed shear stress due to waves only and combined current and waves, and in turn to compute the bed-load and suspended-load transport rates using the Wu et al. (2000) formula without changing its original formulation. The enhanced bed-load formula considers the effect of wave asymmetry on sediment transport, calculates the onshore and offshore bed-load transport rates separately and then derives the net transport rate, whereas the enhanced suspended-load formula calculates only the net transport rate due to the limit of available data. The formula has been tested using the single-sized and multiple-sized sediment transport data sets. The formula provides reliable predictions in both fractional and total transport rates. More than half of the test cases are predicted within a factor of 2 of the measured values, and more than 90% of the cases are within a factor of 5. This accuracy is generally reasonable for sediment transport under current and waves, which is very complex and little understood.
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CHARAFI, MY M., A. SADOK, A. KAMAL, and A. MENAI. "QUASI-THREE-DIMENSIONAL MATHEMATICAL MODELING OF MORPHOLOGICAL PROCESSES BASED ON EQUILIBRIUM SEDIMENT TRANSPORT." International Journal of Modern Physics C 11, no. 07 (October 2000): 1425–36. http://dx.doi.org/10.1142/s0129183100001267.

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A quasi-three-dimensional mathematical model has been developed to study the morphological processes based on equilibrium sediment transport method. The flow velocities are computed by a two-dimensional horizontal depth-averaged flow model (H2D) in combination with logarithmic velocity profiles. The transport of sediment particles by a flow water has been considered in the form of bed load and suspended load. The bed load transport rate is defined as the transport of particles by rolling and saltating along the bed surface and is given by the Van Rijn relationship (1987). The equilibrium suspended load transport is described in terms of an equilibrium sediment concentration profile (ce) and a logarithmic velocity (u). Based on the equilibrium transport, the bed change rate is given by integration of the sediment mass-balance equation. The model results have been compared with a Van Rijn results (equilibrium approach) and good agreement has been found.
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Roarty, Hugh J., and Michael S. Bruno. "Laboratory Measurements of Bed Load Sediment Transport Dynamics." Journal of Waterway, Port, Coastal, and Ocean Engineering 132, no. 3 (May 2006): 199–211. http://dx.doi.org/10.1061/(asce)0733-950x(2006)132:3(199).

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Dissertations / Theses on the topic "Sediment transport. Bed load"

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Wiberg, Patricia Louise. "Mechanics of bedload sediment transport /." Thesis, Connect to this title online; UW restricted, 1987. http://hdl.handle.net/1773/10988.

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Weltmer, Micah A. "Bedform evolution and sediment transport under breaking waves." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Mar%5FWeltmer.pdf.

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Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, March 2003.
Thesis advisor(s): Timothy P. Stanton, Edward B. Thornton. Includes bibliographical references (p. 79-83). Also available online.
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Wilcock, Peter R. (Peter Richard) 1953. "Bed-load transport of mixed-size sediment." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14866.

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Inpasihardjo, Koensatwanto. "Bed load transport of nonuniform size sediment in mountain rivers." Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316082.

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Schmelter, Mark L. "Applications of Bayesian Statistics in Fluvial Bed Load Transport." DigitalCommons@USU, 2013. http://digitalcommons.usu.edu/etd/1515.

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Fluvial sediment transport is a process that has long been important in managing water resources. While we intuitively recognize that increased flow amounts to increased sediment discharge, there is still significant uncertainty in the details. Because sediment transport---and in the context of this dissertation, bed load transport---is a strongly nonlinear process that is usually modeled using empirical or semi-empirical equations, there exists a large amount of uncertainty around model parameters, predictions, and model suitability. The focus of this dissertation is to develop and demonstrate a series of physically- and statistically-based sediment transport models that build on the scientific knowledge of the physics of sediment transport while evaluating the phenomenon in an environment that leads us to robust estimates of parametric, predictive, and model selection uncertainty. The success of these models permits us to put theoretically and procedurally sound uncertainty estimates to a process that is widely acknowledged to be variable and uncertain but has, to date, not developed robust statistical tools to quantify this uncertainty. This dissertation comprises four individual papers that methodically develop and prove the concept of Bayesian statistical sediment transport models. A simple pedagogical model is developed using synthetic and laboratory flume data---this model is then compared to traditional statistical approaches that are more familiar to the discipline. A single-fraction sediment transport model is developed on the Snake River to develop a probabilistic sediment budget whose results are compared to a sediment budget developed through an ad hoc uncertainty analysis. Lastly, a multi-fraction sediment transport model is developed in which multiple fractions of laboratory flume experiments are modeled and the results are compared to the standard theory that has been already published. The results of these models demonstrate that a Bayesian approach to sediment transport has much to offer the discipline as it is able to 1) accurately provide estimates of model parameters, 2) quantify parametric uncertainty of the models, 3) provide a means to evaluate relative model fit between different deterministic equations, 4) provide predictive uncertainty of sediment transport, 5) propagate uncertainty from the root causes into secondary and tertiary dependent functions, and 6) provide a means by which testing of established theory can be performed.
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Ayyoubzadeh, Seyed Ali. "Hydraulic aspects of straight-compound channel flow and bed load sediment transport." Thesis, University of Birmingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391507.

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Figueiredo, Fabíola Tocchini de. "Caracterização do escoamento no limite de mobilização de um leito granular cisalhado por um fluido." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264086.

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Orientadores: Eugênio Spanó Rosa, Erick de Moraes Franklin
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
Made available in DSpace on 2018-08-20T18:21:08Z (GMT). No. of bitstreams: 1 Figueiredo_FabiolaTocchinide_M.pdf: 4897680 bytes, checksum: 594ff391035bd0cca23d8d6ccc9465f2 (MD5) Previous issue date: 2012
Resumo: O transporte de grãos por um fluido em escoamento é frequentemente encontrado na natureza e na indústria. Está presente, por exemplo, na erosão das margens de rios, na migração de dunas no deserto e no transporte de areia em dutos. O mecanismo de transporte se dá através da transferência da quantidade de movimento do fluido para os grãos. Quando a força exercida pelo fluido no leito granular é capaz de mover alguns grãos, mas é relativamente pequena comparada ao peso dos grãos, o escoamento não é capaz de transportar os grãos como suspensão. Forma-se uma camada móvel de grãos em contato com a parte fixa do leito, conhecida como leito móvel (em inglês, 'bed-load'). Se o fluido é um líquido, a espessura desta camada móvel é de apenas alguns diâmetros de grão. A transferência de quantidade de movimento do fluido para os grãos altera o campo de escoamento tornando o perfil de velocidades diferente do caso de leito fixo. Este trabalho está interessado em entender as mudanças que acontecem no escoamento de um líquido turbulento devido à presença de um leito granular móvel, este fenômeno é conhecido como 'feed-back effect'. Os experimentos foram realizados em um canal horizontal de seção retangular e o equipamento de medida PIV (em inglês, 'Particle Image Velocimetry') foi usado para medir o escoamento turbulento de água sobre leitos granulares fixos e móveis. Os perfis de velocidade sobre leito granular fixo e móvel foram medidos para dois diferentes tamanhos de grãos, 160 'mi'm e 360 'mi'm, para a mesma vazão, em condições próximas ao limite de mobilidade dos grãos. Esta é a primeira vez que esta perturbação é experimentalmente medida no caso de escoamento turbulento de líquidos em regime hidraulicamente liso
Abstract: The transport of granular matter by a fluid flow is frequently found in nature and in industry. It is present for example, in the erosion of river banks, in the displacement of desert dunes and on the transport of sand in hydrocarbon pipelines. The entraining mechanism is the momentum transfer from the fluid flow to the grains. When the forces exerted by the fluid flow on the granular bed are able to move some grains, but are relatively small compared to the grains weight, the flow is not able to transport grains as a suspension. Instead a mobile layer of grains, known as bed-load, takes place. If the fluid is a liquid, the bed-load thickness is only a few grains diameters. The momentum transfer from the fluid to the mobile layer alters the fluid flow itself, i. e., the fluid flow is different from that if the bed were static. In this work we are interested in quantifying the changes (perturbation) caused by a mobile layer of grains (granular transport as bed-load) on a turbulent liquid flow. The experiments were performed on a horizontal closed-conduit channel of rectangular cross section and a PIV (Particle Image Velocimetry) device was used to measure the turbulent water flow over fixed and mobile granular beds. The turbulent fully-developed velocity profiles over fixed and mobile granular beds were measured for two different diameter of grains, 160 'mi'm and 360 'mi'm, for roughly the same water flow rates, in conditions near the threshold of the bed-load. The spatial resolution of the measurements allows the experimental quantification of this perturbation and comparison with bed-load theories. The mean flow profiles were obtained, so that the effects of bed-load on the shear stress could be determined. This is the first time that this perturbation is experimentally measured in the case of turbulent flows of liquids
Mestrado
Termica e Fluidos
Mestra em Engenharia Mecânica
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Santos, Bruno José Oliveira. "Coherent structures in open channel flows with bed load transport over an hydraulically rough bed." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11204.

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Dissertação para obtenção do Grau de Mestre em Engenharia Civil – Perfil de Estruturas
The degradation of forests through the impacts of devastating wildfires increase unprotected soils area which consequently favours soil erosion processes. The sediment production is continuously reaching water courses in these areas which may result in important impacts in the flow morphodynamics and hydrodynamics. Sediment overfeeding induces important changes in the turbulent structure of the flow, mainly in momentum fluxes and exchange of momentum and mass between different layers in the flow structure, consequently affecting its ecological features. Coherent structures play an important role on sediment transport and mixing processes which are important in the fluxes that govern the turbulent structure. This study is aimed at evaluating the impacts of sediment transport on flow hydrodynamics, namely on the statistics characterizing coherent movements. In order to accomplish the purposed objective, experimental tests were undertook in laboratorial environment where two-dimensional instantaneous flow velocity fields in both directions, streamwise and vertical, were measured through means of Particle Image Velocimetry (PIV) technique. Two laboratory tests were simulated, consisting on a framework gravel bed with sand matrix and a framework gravel bed with sediment transport imposed at near capacity conditions. For both tests, the quadrant threshold analysis technique was employed and shear stress distribution statistics were analysed and discussed in what concerns their contribution and persistence. The results show that, in the near bed region, mobile bed conditions make sweep events assume a major role in the shear stress production processes. Also, larger events become less frequent in the pythmenic region, comparing with the immobile bed results. The impacts of mobile sediment in the near bed region over the flow structure are analysed and discussed in detail through probability density function distributions, in dimensional and non-dimensional data.
Fundação para a Ciência e Tecnologia - PTDC/ECM/099752/2008 ; undo de Europeu de Desenvolvimento Económico e Regional(FEDER) através do Programa Operacional Factores de Competitividade(COMPETE)FCOMP 01 0124 FEDER 009735
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Shaw, Susan Calder. "Bedload transport of mixed-sized sediments by wind /." Thesis, Connect to this title online; UW restricted, 1994. http://hdl.handle.net/1773/6742.

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Ngusaru, Amani S. "Cross-shore migration of lunate megaripples and bedload sediment transport models /." Internet access available to MUN users only, 2000. http://collections.mun.ca/u?/theses,37433.

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Books on the topic "Sediment transport. Bed load"

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Bunte, Kristin. Analyses of the temporal variation of coarse bedload transport and its grain size distribution: Squaw Creek, Montana, USA. Fort Collins, Colo: U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1996.

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Bunte, Kristin. Analyses of the temporal variation of coarse bedload transport and its grain size distribution: Squaw Creek, Montana, USA. Fort Collins, Colo: U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1996.

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Smalley, Myron L. Annual replenishment of bed material by sediment transport in the Wind River near Riverton, Wyoming. Cheyenne, Wyo: U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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Smalley, Myron L. Annual replenishment of bed material by sediment transport in the Wind River near Riverton, Wyoming. Cheyenne, Wyo: U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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Smalley, Myron L. Annual replenishment of bed material by sediment transport in the Wind River near Riverton, Wyoming. Cheyenne, Wyo: U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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Goodwin, Peter. Sediment transport in unsteady flows: By Peter Goodwin. Berkeley, Calif: Hydraulic Engineering Laboratory, Dept. of Civil Engineering, University of California, 1986.

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Wollenburg, Ingo. Sedimenttransport durch das arktische Meereis : die rezente lithogene und biogene Materialfracht =: Sediment transport by Arctic Sea ice : the recent load of lithogenic and biogenic material. Bremerhaven: Alfred-Wegener-Institut fur Polar- und Meeresforschung, 1993.

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Wei chi Huang He zhu cao bu wei suo de shui sha tiao jian yan jiu: Weichi HuangHe zhucao buweisuo de shuisha tiaojian yanjiu. Zhengzhou Shi: Huang He shui li chu ban she, 2010.

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Oblinger, Carolyn J. Suspended sediment and bed load in three tributaries to Lake Emory in the Upper Little Tennessee River Basin, North Carolina, 2000-02. Raleigh, N.C: U.S. Geological Survey, U.S. Dept. of the Interior, 2003.

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Oblinger, Carolyn J. Suspended sediment and bed load in three tributaries to Lake Emory in the upper Little Tennessee River basin, North Carolina, 2000-02. Raleigh, North Carolina: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Book chapters on the topic "Sediment transport. Bed load"

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Chien, Ning, and Zhaohui Wan. "Bed Load Motion." In Mechanics of Sediment Transport, 355–404. Reston, VA: American Society of Civil Engineers, 1999. http://dx.doi.org/10.1061/9780784404003.ch09.

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Blom, Astrid, Jan S. Ribberink, and Gary Parker. "Sediment Continuity for Rivers with Non-Uniform Sediment, Dunes, and Bed Load Transport." In Sedimentation and Sediment Transport, 179–82. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0347-5_28.

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Gharabaghi, Bahram, Hossein Bonakdari, and Isa Ebtehaj. "Hybrid Evolutionary Algorithm Based on PSOGA for ANFIS Designing in Prediction of No-Deposition Bed Load Sediment Transport in Sewer Pipe." In Advances in Intelligent Systems and Computing, 106–18. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01177-2_8.

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Dey, Subhasish. "Bed-Load Transport." In GeoPlanet: Earth and Planetary Sciences, 261–326. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-19062-9_5.

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Chien, Ning, and Zhaohui Wan. "Bed Form Movement." In Mechanics of Sediment Transport, 193–248. Reston, VA: American Society of Civil Engineers, 1999. http://dx.doi.org/10.1061/9780784404003.ch06.

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Sternberg, Richard W. "Continuous Suspended Load Sampler." In Nearshore Sediment Transport, 95–102. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4899-2531-2_14.

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Jain, Subhash C. "Sediment Transport under Nonequilibrium Conditions." In Movable Bed Physical Models, 91–95. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2081-1_9.

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Zampol, James A., and B. Walton Waldorf. "Discrete Sampling of Bedload and Suspended Load." In Nearshore Sediment Transport, 79–89. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4899-2531-2_12.

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Klingeman, Peter C. "Transport Thresholds in Gravel-Bed Rivers." In Sedimentation and Sediment Transport, 229–36. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0347-5_36.

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Kumar Maity, Swapan, and Ramkrishna Maiti. "Analysis of Bed Load Sediment Texture." In SpringerBriefs in Earth Sciences, 79–96. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62304-7_6.

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Conference papers on the topic "Sediment transport. Bed load"

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De Sutter, Renaat, Marc Huygens, Ronny Verhoeven, Simon Tait, Peter Rushforth, Adrian Saul, Mathieu Ahyerre, and Ghassan Chebbo. "Validation of Existing Bed Load Transport Formulae Using In-Sewer Sediment." In Specialty Symposium on Urban Drainage Modeling at the World Water and Environmental Resources Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40583(275)50.

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Parr, Alfred D. "A Laboratory Study of Sediment Transport in Free Surface Flow." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77336.

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This paper discusses an undergraduate fluid mechanics laboratory session. The lab allows the students to observe various sediment transport phenomena in a hands-on manner. The experiments are performed in a glass-walled, tilting sediment flume. The following sediment transport phenomena are created and observed by the students — bed load, suspended load, bed forms (ripples, dunes, antidunes...), surface waves over various bed forms and local scour at flow obstructions including bridge piers and abutments. Students are able to observe local scour using PVC pipes for bridge piers and dimension lumber for abutment scour. Since the flume is 12.2-m long, a large group of students can spread out along both sides of the flume to observe bed forms and to perform local scour tests.
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Matoušek, Václav, Štěpán Zrostlík, Jan Krupička, Tomáš Picek, and Vojtěch Bareš. "Physical and Mathematical Modeling of Solid-Liquid Flow at High Bed Shear in Steep Flume." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-31238.

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The paper discusses new results of our experimental- and mathematical modeling of sediment-laden open-channel flows in the upper plane bed regime associated with intense transport of sediment. Our recent studies showed that bed-load transport and bed friction are interrelated and classical formulae for bed friction (Nikuradse formula) and bed-load transport (Meyer-Peter and Muller formula) need to be modified to account for the intense transport of sediment. The new results of our laboratory experiments in a tilting flume are presented and analyzed for different sediment fractions. The analysis is focused on the effect of solids density and size on the solid-liquid flow characteristics as the solids flow rate, flow depth, and bed slope for certain flow rate of water in a channel of given geometry. The experimental results are compared with outputs of our mathematical model simulating the observed phenomena. The simple 1-D model combines hydrodynamic- and sediment-transport equations and enables to use different transport- and friction formulae to predict the solids transport, flow depth and bed slope under the condition of (pseudo-) uniform flow of solid-water mixture in the open channel.
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Takahashi, Tomoyuki, Nobuo Shuto, Fumihiko Imamura, and Daisuke Asai. "Modeling Sediment Transport due to Tsunamis with Exchange Rate between Bed Load Layer and Suspended Load Layer." In 27th International Conference on Coastal Engineering (ICCE). Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40549(276)117.

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HE, ZHIGUO, LIMING TAN, and PENG HU. "CAPACITY VERSUS NON-CAPACITY MODELING OF BED LOAD TRANSPORT IN THE SWASH ZONE." In Coastal Sediments 2015. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814689977_0054.

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Hosseini-Sadabadi, S., A. Radice, and F. Ballio. "Post-processing of particle tracking data for phenomenological depiction of weak bed-load sediment transport." In The International Conference On Fluvial Hydraulics (River Flow 2016). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-124.

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Matoušek, Václav, Jan Krupička, Tomáš Picek, and Štěpán Zrostlik. "Solids Distribution in Sediment-Laden Open-Channel Flow: Experiment and Prediction." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20198.

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Abstract Solid-liquid flow is studied in an open channel with a mobile bed at the condition of intense transport of solids. It is flow of high-concentrated mixture of coarse sediment and water over a plane surface of the bed eroded due to high bed shear. In the flow, solid particles are non-uniformly distributed across the flow depth. The flow develops a transport layer, adjacent to the the top of the bed, in which transported particles interact with each other. Results are presented of experimental investigations of the sediment-laden open-channel flow in a recirculating titling flume. The experiments included measurements (using ultrasonic techniques) of the distribution of solids velocity across the transport layer. The related distribution of solids concentration was deduced from the measured distribution of velocity and from other measured flow quantities. Since recently, a direct measurement of the solids distribution across the transport layer has been added to the experiments using a measuring technique svideo camera and a laser sheet. This work discusses results of combined measurements of the distributions of solids concentration and velocity in steady uniform turbulent flow for two lightweight solids fractions and various flow conditions (a broad range of the bed Shields parameter, discharge of solids, discharge of mixture, and the longitudinal slope of the bed). Furthermore, the camera-based measuring method and the deducing method for a determination of solids distribution are discussed and their results compared to show a good agreement in a majority of the test runs. The experimental results are compared with predictions of a recently developed bed-load transport model. Among other outputs, the model predicts the position of the top of the transport layer and the local velocity of sediment particles at this position. The presented model predictions agree well with experimental results based on the measured distibutions.
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Leftheriotis, Georgios A., and Athanassios A. Dimas. "Coupled Simulation of Oscillatory Flow, Sediment Transport and Morphology Evolution of Ripples Based on the Immersed Boundary Method." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24006.

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In the present study, numerical simulations of oscillatory flow over a rippled bottom, coupled with bed and suspended sediment transport, as well as the resulting morphology evolution, are performed. The simulations are based on the numerical solution of the Navier-Stokes equations and the advection-diffusion equation for the suspended load, while empirical formulas are used for the bed load. The bed morphological evolution is obtained by the numerical solution of the conservation of sediment mass equation. A fractional time-step scheme is used for the temporal discretization, while finite differences are used for the spatial discretization on a Cartesian grid. The Immersed Boundary method is implemented for the imposition of fluid and sediment boundary conditions on the ripple surface. Two types of ripples are examined, i.e., ripples of parabolic shape with sharp crests and sinusoidal ripples, and cases of ripple length to orbital motion amplitude ratio of 1.6 and ripple height to orbital motion amplitude ratios of 0.16, 0.20 and 0.24, at Reynolds number equal to 5×103. The effect of ripple steepness and ripple shape on suspended sediment and ripple migration is discussed.
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Nakamura, Tomoaki, and Norimi Mizutani. "Sediment Transport Calculation Considering Laminar and Turbulent Resistance Forces due to Infiltration/Exfiltration and its Application to Tsunami-Induced Local Scouring." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10199.

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A sediment transport calculation which consistently considers the effect of laminar and turbulent resistance forces due to infiltration/exfiltration was proposed. From a comparison of the non-dimensional bed-load sediment transport rate, it is found to be essential to consider laminar resistance force as well as turbulent resistance force when formulating the effect of infiltration/exfiltration in sediment transport calculations. The proposed sediment transport calculation was incorporated to improve a three-dimensional coupled fluid-structure-sediment interaction model, and the improved model is applied to tsunami-induced local scouring around an inland structure. Numerical results show that the consideration of infiltration/exfiltration improves the computational accuracy of a scour hole formed around the seaward edge of the structure, and accordingly the improved model can capture the evolution of the scour hole with sufficient accuracy. This suggests that the improved model is expected to be a useful tool for assessing tsunami-induced local scouring.
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Karoonmakphol, Pimprapa, and Pichet Chaiwiwatworakul. "Evaluation of cadmium contamination due to bed load sediment transport in Mae Tao Creek, Mae Sot District, Tak Province, Thailand." In 2010 International Conference on Chemistry and Chemical Engineering (ICCCE). IEEE, 2010. http://dx.doi.org/10.1109/iccceng.2010.5560375.

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Reports on the topic "Sediment transport. Bed load"

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Wilcock, Peter, John Pitlick, and Yantao Cui. Sediment transport primer: estimating bed-material transport in gravel-bed rivers. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2009. http://dx.doi.org/10.2737/rmrs-gtr-226.

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Wilcock, Peter, John Pitlick, and Yantao Cui. Sediment transport primer: estimating bed-material transport in gravel-bed rivers. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2009. http://dx.doi.org/10.2737/rmrs-gtr-226.

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Pitlick, John, Yantao Cui, and Peter Wilcock. Manual for computing bed load transport using BAGS (Bedload Assessment for Gravel-bed Streams) Software. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2009. http://dx.doi.org/10.2737/rmrs-gtr-223.

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Pitlick, John, Yantao Cui, and Peter Wilcock. Manual for computing bed load transport using BAGS (Bedload Assessment for Gravel-bed Streams) Software. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2009. http://dx.doi.org/10.2737/rmrs-gtr-223.

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Abraham, David, Jon Hendrickson, Keaton Jones, Anthony Jackson, and Tate McAlpin. Bed-load transport measurements on the Chippewa River using the ISSDOTv2 method. Engineer Research and Development Center (U.S.), February 2020. http://dx.doi.org/10.21079/11681/35634.

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Gibson, Stanford, Kevri Ramos, Ronald Heath, David Abraham, Travis Dahl, and Alejandro Sánchez. Inverse size dependence of sediment velocity and dispersion near the sand-gravel transition : bed form influence on bed-load sediment flux, advection, and dispersion. Engineer Research and Development Center (U.S.), January 2020. http://dx.doi.org/10.21079/11681/35096.

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Sherwood, Christopher R., and David M. Rubin. Particle Size, Bed Properties, and Transport of Sediment on European Epicontinental Shelves. Fort Belvoir, VA: Defense Technical Information Center, September 2004. http://dx.doi.org/10.21236/ada630105.

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Nelson, Jonathan M. Computational Modeling of River Flow, Sediment Transport, and Bed Evolution Using Remotely Sensed Data. Fort Belvoir, VA: Defense Technical Information Center, January 2011. http://dx.doi.org/10.21236/ada540516.

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Abraham, David, Marielys Ramos-Villanueva, Thad Pratt, Naveen Ganesh, David May, William Butler, Tate McAlpin, Keaton Jones, John Shelley, and Daniel Pridal. Sediment and hydraulic measurements with computed bed load on the Missouri River, Sioux City to Hermann, 2014. Coastal and Hydraulics Laboratory (U.S.), June 2017. http://dx.doi.org/10.21079/11681/22585.

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King, John G., William W. Emmett, Peter J. Whiting, Robert P. Kenworthy, and Jeffrey J. Barry. Sediment transport data and related information for selected coarse-bed streams and rivers in Idaho. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2004. http://dx.doi.org/10.2737/rmrs-gtr-131.

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