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Rettinger, C. and Rüde, U. 2018. A Coupled Lattice Boltzmann Method and Discrete Element Method for Discrete Particle Simulations of Particulate Flows. Computers & Fluids,
Vellinga, Age J. Cartigny, Matthieu J. B. Eggenhuisen, Joris T. Hansen, Ernst W. M. and Fielding, Chris 2018. Morphodynamics and depositional signature of low-aggradation cyclic steps: New insights from a depth-resolved numerical model. Sedimentology, Vol. 65, Issue. 2, p. 540.
Harada, Eiji Gotoh, Hitoshi Ikari, Hiroyuki and Khayyer, Abbas 2017. Numerical simulation for sediment transport using MPS-DEM coupling model. Advances in Water Resources,
Mazzuoli, Marco and Uhlmann, Markus 2017. Direct numerical simulation of open-channel flow over a fully rough wall at moderate relative submergence. Journal of Fluid Mechanics, Vol. 824, p. 722.
Pähtz, Thomas and Durán, Orencio 2017. Fluid forces or impacts: What governs the entrainment of soil particles in sediment transport mediated by a Newtonian fluid?. Physical Review Fluids, Vol. 2, Issue. 7,
Wang, Yayun Sierakowski, Adam J. and Prosperetti, Andrea 2017. Fully-resolved simulation of particulate flows with particles–fluid heat transfer. Journal of Computational Physics, Vol. 350, p. 638.
Leary, K. C. P. and Schmeeckle, M. W. 2017. The Importance of Splat Events to the Spatiotemporal Structure of Near-Bed Fluid Velocity and Bed Load Motion Over Bed Forms: Laboratory Experiments Downstream of a Backward Facing Step. Journal of Geophysical Research: Earth Surface, Vol. 122, Issue. 12, p. 2411.
Seil, Philippe Pirker, Stefan and Lichtenegger, Thomas 2017. Onset of sediment transport in mono- and bidisperse beds under turbulent shear flow. Computational Particle Mechanics,
Rodi, Wolfgang 2017. Turbulence Modeling and Simulation in Hydraulics: A Historical Review. Journal of Hydraulic Engineering, Vol. 143, Issue. 5, p. 03117001.
Furbish, David Jon Fathel, Siobhan L. Schmeeckle, Mark W. Jerolmack, Douglas J. and Schumer, Rina 2017. The elements and richness of particle diffusion during sediment transport at small timescales. Earth Surface Processes and Landforms, Vol. 42, Issue. 1, p. 214.
Vreman, A.W. 2017. A staggered overset grid method for resolved simulation of incompressible flow around moving spheres. Journal of Computational Physics, Vol. 333, p. 269.
Kidanemariam, Aman G. and Uhlmann, Markus 2017. Formation of sediment patterns in channel flow: minimal unstable systems and their temporal evolution. Journal of Fluid Mechanics, Vol. 818, p. 716.
Sun, Rui Xiao, Heng and Sun, Honglei 2017. Realistic representation of grain shapes in CFD–DEM simulations of sediment transport with a bonded-sphere approach. Advances in Water Resources, Vol. 107, p. 421.
Sotiropoulos, Fotis and Khosronejad, Ali 2016. Sand waves in environmental flows: Insights gained by coupling large-eddy simulation with morphodynamics. Physics of Fluids, Vol. 28, Issue. 2, p. 021301.
Sun, Rui and Xiao, Heng 2016. Sediment micromechanics in sheet flows induced by asymmetric waves: A CFD–DEM study. Computers & Geosciences, Vol. 96, p. 35.
Mazzuoli, Marco Kidanemariam, Aman G. Blondeaux, Paolo Vittori, Giovanna and Uhlmann, Markus 2016. On the formation of sediment chains in an oscillatory boundary layer. Journal of Fluid Mechanics, Vol. 789, p. 461.
We present results of direct numerical simulation of incompressible fluid flow over a thick bed of mobile spherically shaped particles. The algorithm is based upon the immersed-boundary technique for fluid–solid coupling and uses a soft-sphere model for the solid–solid contact. Two parameter points in the laminar flow regime are chosen, leading to the emergence of sediment patterns classified as ‘small dunes’, while one case under turbulent flow conditions leads to ‘vortex dunes’ with significant flow separation on the lee side. The wavelength, amplitude and propagation speed of the patterns extracted from the spanwise-averaged fluid–bed interface are found to be consistent with available experimental data. The particle transport rates are well represented by available empirical models for flow over a plane sediment bed in both the laminar and the turbulent regimes.
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