Littérature scientifique sur le sujet « Sediment-turbulence interaction »
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Articles de revues sur le sujet "Sediment-turbulence interaction"
Atapaththu, Keerthi Sri Senarathna, Takashi Asaeda, Masumi Yamamuro et Hiroshi Kamiya. « Effects of water turbulence on plant, sediment and water quality in reed (Phragmites australis) community ». Ekológia (Bratislava) 36, no 1 (1 mars 2017) : 1–9. http://dx.doi.org/10.1515/eko-2017-0001.
Texte intégralSaruwatari, Ayumi, Junichi Otsuka et Yasunori Watanabe. « SEDIMENT ADVECTION AND DIFFUSION BY OBLIQUELY DESCENDING EDDIES ». Coastal Engineering Proceedings, no 36 (30 décembre 2018) : 96. http://dx.doi.org/10.9753/icce.v36.sediment.96.
Texte intégralMohtar, W. H. M. Wan, et N. M. Zakaria. « The Interaction of Oscillating-Grid Turbulence with a Sediment Layer ». Research Journal of Applied Sciences, Engineering and Technology 6, no 4 (20 juin 2013) : 598–608. http://dx.doi.org/10.19026/rjaset.6.4170.
Texte intégralN., Bustamante-Penagos, et Niño Y. « Flow–Sediment Turbulent Ejections : Interaction between Surface and Subsurface Flow in Gravel-Bed Contaminated by Fine Sediment ». Water 12, no 6 (3 juin 2020) : 1589. http://dx.doi.org/10.3390/w12061589.
Texte intégralNoguchi, Kazunori, et Iehisa Nezu. « Particle–turbulence interaction and local particle concentration in sediment-laden open-channel flows ». Journal of Hydro-environment Research 3, no 2 (octobre 2009) : 54–68. http://dx.doi.org/10.1016/j.jher.2009.07.001.
Texte intégralRevil-Baudard, T., J. Chauchat, D. Hurther et O. Eiff. « Turbulence modifications induced by the bed mobility in intense sediment-laden flows ». Journal of Fluid Mechanics 808 (2 novembre 2016) : 469–84. http://dx.doi.org/10.1017/jfm.2016.671.
Texte intégralFinn, Justin R., et Ming Li. « Regimes of sediment-turbulence interaction and guidelines for simulating the multiphase bottom boundary layer ». International Journal of Multiphase Flow 85 (octobre 2016) : 278–83. http://dx.doi.org/10.1016/j.ijmultiphaseflow.2016.06.007.
Texte intégralNoguchi, K., I. Nezu et M. Sanjou. « Turbulence structure and fluid–particle interaction in sediment-laden flows over developing sand dunes ». Environmental Fluid Mechanics 8, no 5-6 (7 novembre 2008) : 569–78. http://dx.doi.org/10.1007/s10652-008-9114-3.
Texte intégralVoermans, J. J., M. Ghisalberti et G. N. Ivey. « The variation of flow and turbulence across the sediment–water interface ». Journal of Fluid Mechanics 824 (6 juillet 2017) : 413–37. http://dx.doi.org/10.1017/jfm.2017.345.
Texte intégralVittori, Giovanna, Paolo Blondeaux et Marco Mazzuoli. « Direct Numerical Simulations of the Pulsating Flow over a Plane Wall ». Journal of Marine Science and Engineering 8, no 11 (9 novembre 2020) : 893. http://dx.doi.org/10.3390/jmse8110893.
Texte intégralThèses sur le sujet "Sediment-turbulence interaction"
Wan, Mohtar Wan Hanna Melini. « The interaction between oscillating-grid turbulence and a sediment layer ». Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12385/.
Texte intégralBressan, Filippo. « Large Eddy Simulation of turbulence around a scoured Bridge Abutment ». Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3511.
Texte intégralIn this work the turbulent field developing in case of local erosion around a 45° wing-wall bridge abutment was investigated numerically. Three different scour conditions were considered: beginning of the process, logarithmic phase and equilibrium stage. The flow field was computed using a wall-resolving large eddy simulation (a simulation where the near-wall viscous sub-layer is directly resolved) and the bathymetric data were taken from physical experiments with an equivalent geometry. The dynamics of the coherent structures forming around the obstacle and inside the scour-hole was investigated and its influence on the modeling of the problem and on the erosion process was discussed. The analysis suggested that the full dynamics of the vortex system should be directly solved since simple eddy-viscosity models, as the k-ε model in RANS approach, were found to be not suited for this kind of problem and since high-order statistics were found to be important for the evolution of the local scour. The results of the present study may be helpful to formulate new physical-based local scour models to be used for practical evaluation of the scour depth around bridge abutments.
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Balakrishnan, Mahalingam III. « The Role of Turbulence on the Entrainment of a Single Sphere and the Effects of Roughness on Fluid-Solid Interaction ». Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30732.
Texte intégralPh. D.
Nagel, Tim. « Étude numérique des interactions multi-échelles écoulement-sédiment-structure par une approche multiphasique ». Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAI050/document.
Texte intégralThe work undertaken in this PhD thesis was to develop and use numerical models to investigate the multi-scale interactions between an offshore wind turbine and the local ocean and sediment dynamics. First, the interactions between the coupled ocean-sediment system and the atmospheric wake generated by an offshore wind turbine are investigated using an idealized two-dimensional model developed during this Phd thesis and written in fortran. The model integrates the shallow water equations for the ocean together with the Exner equation for the sediment bed. In a second part, the 3D scour phenomenon around a vertical cylinder in a steady current is studied using a two-phase flow eulerian-eulerian solver, sedFoam, written within the framework of the numerical toolbox OpenFOAM. The two-phase flow approach accounts for small-scale processes by avoiding the traditional assumptions made for sediment transport modeling, such as a local corre- lation between the sediment flux and the fluid bed shear stress.Regarding the atmospheric wake generated by a turbine, the results shows that its impact on the ocean’s surface can generate vortices. The resulting turbulent ocean dynamics is controlled by the wake parameter S = CdD/H, where D is the wake diameter at the impact location on the ocean surface, Cd is the quadratic friction coefficient between the ocean and the sediment and H is the oceanic layer depth. A turbulence parameterization based on S is proposed, allowing for upscaling simulations in larger scales Reynolds Averaged Navier-Stokes (RANS) models. It is shown that the ocean dynamics has an effect on the available wind power. The results also show that the instantaneous sediment dynamics is strongly coupled with the ocean one but that the overall seabed elevation variations remain small (a few millimeters/month). The morphodynamic impact of the wake is thus negligible.Concerning the two-phase flow simulation of scour, sedFoam is first validated on 1D and 2D configurations. Then, 3D simulations around a vertical cylindrical pile are presented. At first, a validation of the Unsteady Reynolds Averaged Navier-Stokes (URANS) turbulence model developed in this work is performed on a configuration without sediment. The results show that the vortices structures responsible for scouring, the Horse Shoe Vortex (HSV) and the vortex-shedding in the lee of the cylinder are correctly reproduced. Then, 3D two-phase flow simulations of the scour around a cylindrical pile have been carried out in a live-bed configuration. This work is the first attempt to model 3D scour phenomenon using the two-phase flow approach. Such simulations represent a real challenge in terms of high performance computing. The good agreement between the numerical predictions and the literature experimental results provide the proof of concept that the two-phase flow approach can be used to study complex 3D and unsteady flow configurations. The relationship between the local bed shear stress, the sediment flux and the local sediment bed slope is further investigated. The deviation of the results from a uniform flow configuration is further analyzed to identify the relevant sediment transport mechanisms associated with the HSV, the slope in the scour mark and the vortex-shedding downstream of the cylinder. Finally, the numerical results show a grid sensitivity of the morphological predictions in the lee of the cylinder that are most probably related to small-scale resolved vortical structures. This highlights the need for two-phase flow Large Eddy Simulations on this configuration in the future
Smith, Heather Dianne. « Flow and sediment dynamics around three-dimensional structures in coastal environments ». Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196261689.
Texte intégralFerner, Matthew C. « Environmental Modification of Chemosensory Interactions between Predators and Prey : The World According to Whelks ». Diss., Connect to this title online, 2006. http://etd.gatech.edu/theses/available/etd-04102006-140436/.
Texte intégralTitle from PDF t.p. (viewed on Oct. 28, 2006). Weissburg, Marc, Committee Chair ; Dusenbery, David, Committee Member ; Hay, Mark, Committee Member ; Webster, Donald, Committee Member ; Blanton, Jackson, Committee Member. Includes bibliographical references (p. 108-119).
Livres sur le sujet "Sediment-turbulence interaction"
Turbulence and Flow–Sediment Interactions in Open-Channel Flows. MDPI, 2021. http://dx.doi.org/10.3390/books978-3-03943-900-3.
Texte intégralChapitres de livres sur le sujet "Sediment-turbulence interaction"
Toorman, E. A., A. W. Bruens, C. Kranenburg et J. C. Winterwerp. « Interaction of suspended cohesive sediment and turbulence ». Dans Fine Sediment Dynamics in the Marine Environment, 7–23. Elsevier, 2002. http://dx.doi.org/10.1016/s1568-2692(02)80005-5.
Texte intégralNezu, I., et R. Azuma. « Turbulence modulation and particle–fluid interaction in sediment-laden open-channel flows ». Dans Environmental Hydraulics and Sustainable Water Management, Two Volume Set, 2171–78. CRC Press, 2004. http://dx.doi.org/10.1201/b16814-353.
Texte intégralActes de conférences sur le sujet "Sediment-turbulence interaction"
Pakseresht, Pedram, Sourabh V. Apte et Justin R. Finn. « On the Predictive Capability of DNS-DEM Applied to Suspended Sediment-Turbulence Interactions ». Dans ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69449.
Texte intégralGhoreishi, S. H., H. Naji, M. R. M. Tabatabai et G. Mompean. « Numerical Approach to Improve Flushing Efficiency by a Dynamic Morphological Model ». Dans ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61281.
Texte intégralEdwards, Chris, Steven A. Lottes et Pradip Majumdar. « Three-Dimensional Mesh Morphing Methodology for Scouring Around Bridge Piers Based on Computational Fluid Dynamic Solution ». Dans ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62278.
Texte intégralMarval, Juan P., Luis R. Rojas-Solo´rzano et Jennifer S. Curtis. « Two-Dimensional Numerical Simulation of Saltating Particles Using Granular Kinetic Theory ». Dans ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37654.
Texte intégralQian, Qin, Vaughan R. Voller et Heinz G. Stefan. « Modeling of Solute Transport in Pore Scale Sediment Beds : A Summary of Hydrodynamic Interactions Induced by Surface Wave, Bed Form, and Near Bed Turbulence ». Dans World Environmental and Water Resources Congress 2014. Reston, VA : American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413548.029.
Texte intégralLawrence, Angela M., Ashwin Vinod et Arindam Banerjee. « Effect of Free-Stream Turbulence on the Loads Experienced by a Marine Hydrokinetic Turbine ». Dans ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-68395.
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