%0 Journal Article
%T Viscoinertial regime of immersed granular flows
%+ Institut de Radioprotection et de Sûreté Nucléaire (IRSN)
%+ Laboratoire de Mécanique et Génie Civil (LMGC)
%+ Physique et Mécanique des Milieux Divisés (PMMD)
%+ Laboratoire de micromécanique et intégrité des structures (MIST)
%+ Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE)
%+ Multiscale Material Science for Energy and Environment (MSE 2)
%+ ThermoMécanique des Matériaux (ThM2)
%A Amarsid, Lhassan
%A Delenne, Jean-Yves
%A Mutabaruka, Patrick
%A Monerie, Yann
%A Perales, Frédéric
%A Radjai, Farhang
%Z IRSN (French authority of nuclear safety)
%< avec comité de lecture
%@ 2470-0045
%J Physical Review E
%I American Physical Society (APS)
%V 96
%N 1
%8 2017-07
%D 2017
%R 10.1103/PhysRevE.96.012901
%K granular structure
%K viscous fluid
%K viscosity
%K friction
%K méthode de simulation
%K structure granulaire
%K fluide visqueux
%K viscosité
%K frottement
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]Journal articles
%X By means of extensive coupled molecular dynamics–lattice Boltzmann simulations, accounting for grain dynamics and subparticle resolution of the fluid phase, we analyze steady inertial granular flows sheared by a viscous fluid. We show that, for a broad range of system parameters (shear rate, confining stress, fluid viscosity, and relative fluid-grain density), the frictional strength and packing fraction can be described by a modified inertial number incorporating the fluid effect. In a dual viscous description, the effective viscosity diverges as the inverse square of the difference between the packing fraction and its jamming value, as observed in experiments. We also find that the fabric and force anisotropies extracted from the contact network are well described by the modified inertial number, thus providing clear evidence for the role of these key structural parameters in dense suspensions.
%G English
%2 https://hal.science/hal-01607197/document
%2 https://hal.science/hal-01607197/file/Art_Amarsid_al_Viscoinertial_regime_2017.pdf
%L hal-01607197
%U https://hal.science/hal-01607197
%~ CIRAD
%~ IRSN
%~ CNRS
%~ UNIV-MONTP2
%~ INRA
%~ IATE
%~ LMGC
%~ CGP-GATEWAY
%~ MIST
%~ AGREENIUM
%~ MIPS
%~ BA
%~ UNIV-MONTPELLIER
%~ INSTITUT-AGRO-MONTPELLIER
%~ INRAE
%~ INRAEOCCITANIEMONTPELLIER
%~ UM-2015-2021
%~ INSTITUT-AGRO