An hybrid multiscale model for immersed granular flows
1 Université catholique de Louvain, Avenue Georges Lemaître 4-6 bte L4.05.02, 1348, Louvain-la-Neuve, Belgique
2 Laboratoire de Mécanique et Génie Civil - CNRS/UM, Montpellier, France
3 Laboratoire de Micromécanique et Intégrité des Structures - CNRS/UM/IRSN, France.
Published online: 30 June 2017
The intensive use of immersed granular flows has motivated a large amount of work in this field of research. We present here a new numerical model to represent accurately and effciently mixtures of fluid with grains. On one hand, the motion of the grains is solved at the grain scale by a contact dynamics method that consider grains as discrete elements. On the other hand, the fluid flow is computed from a continuous model of the mixture at a greater scale. The link between the two scales is provided by an interaction force based on the Darcy’s law for porous media and used as a closure relation in the equations of the model. Some results of simulations in a two dimensional space are provided to prove the effciency of the implementation.
© The Authors, published by EDP Sciences, 2017
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