EPJ Web Conf.
Volume 140, 2017Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Section||Particle simulations and particle-based methods|
|Published online||30 June 2017|
Numerical insight into the micromechanics of jet erosion of a cohesive granular material
1 IRSTEA, UR RECOVER, 3275 route de Cézanne, 13182 Aix-en-Provence Cedex 5, France
2 BAM, Division 7.2 Buildings and Structures, Unter den Eichen 87, 12205 Berlin, Germany
3 UMR IATE, INRA – CIRAD - Montpellier Supagro, 2 place Pierre Viala, 34060 Montpellier, France
4 LMGC, CNRS - Université Montpellier 2, Place Eugène Bataillon, 34095 Montpellier, France
5 MSE2, UMI 3466 CNRS-MIT, CEE, MIT, 77 Massachusetts Avenue, Cambridge CA 02139, USA
* Corresponding author: firstname.lastname@example.org
Published online: 30 June 2017
Here we investigate the physical mechanisms behind the surface erosion of a cohesive granular soil induced by an impinging jet by means of numerical simulations coupling fluid and grains at the microscale. The 2D numerical model combines the Discrete Element and Lattice Boltzmann methods (DEM-LBM) and accounts for the granular cohesion with a contact model featuring a paraboloidal yield surface. Here we review first the hydrodynamical conditions imposed by the fluid jet on a solid granular packing, turning then the attention to the impact of cohesion on the erosion kinetics. Finally, the use of an additional subcritical debonding damage model based on the work of Silvani and co-workers provides a novel insight into the internal solicitation of the cohesive granular sample by the impinging jet.
© 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.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.