An hybrid multiscale model for immersed granular flows

Matthieu Constant, Frédéric Dubois, Jonathan Lambrechts, Vincent Legat, F. Radjai, S. Nezamabadi, S. Luding, J.Y. Delenne
2017 EPJ Web of Conferences  
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 efficiently 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
more » ... vided 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 efficiency of the implementation.
doi:10.1051/epjconf/201714009021 fatcat:xqrdoiumhjfyrllhscpta2td2u