EPJ Web Conf.
Volume 140, 2017Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Section||Fluids and particles|
|Published online||30 June 2017|
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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