Numerical modelling of graded sediment transport based on the experiments of Wilcock and Crowe (2003) (original) (raw)
2016, Proceedings of the XXIIIrd TELEMAC-MASCARET User Conference 2016, 11 to 13 October 2016, Paris, France
The current work focuses on the sediment transport of non cohesive graded sediment with the TELEMAC-MASCARET Modelling System. The 2D hydro-sedimentary numerical models are based on the experiments lead by Wilcock and Crowe [2003] ran in straight flumes where both water and sediment are recirculated, using a wide range of flows and grain sizes distributions (GSD). Motivations of this study lie on (i) the improvement of the transport rates estimation in the code with comparison to the classical formulation for bedload transport of MPM [1948] and (ii) the applicability of a graded sediment transport model to the numerical simulation of complex morphodynamic problems such as bar formation and propagation. Results show that the computed sediment fluxes are strongly sensitivite to the method of discretization of the GSD, and satisfactory transport rates can be obtained with a relevant discretization of the GSD.
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