Abstract
After a quick overview of recent research on sediment transport by shear flow and ripple and dune formation, original numerical results are presented from two-phase flow modelling of the interaction between a viscous flow and a bed of particles. Good agreement is found with previous experiments or numerical simulation, notably for the particle flux and velocity profiles within the moving layer. Bed instability is also found, giving rise to ripples whose characteristics are discussed.
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Acknowledgements
The authors thank Annaig Pedrono for her support in the coupling of the fluid and DEM solvers. The study was supported by the French Agence Nationale de la Recherche (project ANR-12-2013-ModSed), and some of the computational time was provided by the Scientific Grouping CALMIP (project P1027).
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Charru, F., Bouteloup, J., Bonometti, T. et al. Sediment transport and bedforms: a numerical study of two-phase viscous shear flow. Meccanica 51, 3055–3065 (2016). https://doi.org/10.1007/s11012-016-0553-5
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DOI: https://doi.org/10.1007/s11012-016-0553-5