%0 Conference Proceedings
%T Numerical insight into the micromechanics of jet erosion of a cohesive granular material
%+ Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience (RECOVER)
%+ Division 7.2 Buildings and Structures
%+ Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE)
%+ Laboratoire de Mécanique et Génie Civil (LMGC)
%+ Physique et Mécanique des Milieux Divisés (PMMD)
%+ Multiscale Material Science for Energy and Environment (MSE 2)
%A Cuéllar, Pablo
%A Benseghier, Zeyd
%A Luu, Li-Hua
%A Bonelli, Stéphane
%A Delenne, Jean-Yves
%A Radjai, Farhang
%A Philippe, Pierre
%Z [Departement_IRSTEA]Eaux [TR1_IRSTEA]RIVAGE <br/>[Departement_IRSTEA]Eaux [TR1_IRSTEA]RIVAGE
%< avec comité de lecture
%( EPJ Web of Conferences
%B International Conference on Micromechanics of Granular Media (Powders & Grains)
%C Montpellier, France
%I EDP Sciences
%3 EPJ Web of Conferences
%V 140
%P 4
%8 2017-07-03
%D 2017
%R 10.1051/epjconf/201714015017
%K soil structure
%K granular structure
%K numerical simulation
%K structure granulaire
%K simulation numérique
%K structure du sol
%K hydrodynamique
%K érosion superficielle
%Z Life Sciences [q-bio]Conference papers
%X 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.
%G English
%2 https://hal.science/hal-01595249/document
%2 https://hal.science/hal-01595249/file/epjconf162395_%7B135823B5-FB85-49D9-8CF1-3D801A6D5B9F%7D.pdf
%L hal-01595249
%U https://hal.science/hal-01595249
%~ CIRAD
%~ CNRS
%~ UNIV-MONTP2
%~ IRSTEA
%~ INRA
%~ IATE
%~ LMGC
%~ CGP-GATEWAY
%~ AGREENIUM
%~ MIPS
%~ BA
%~ UNIV-MONTPELLIER
%~ RECOVER
%~ INSTITUT-AGRO-MONTPELLIER
%~ INRAE
%~ INRAEOCCITANIEMONTPELLIER
%~ UM-2015-2021
%~ INSTITUT-AGRO