%0 Journal Article
%T Micro-rheology of dense particulate flows: Application to immersed avalanches
%+ Institut de Radioprotection et de Sûreté Nucléaire (IRSN)
%+ Laboratoire de micromécanique et intégrité des structures (MIST)
%+ Réseaux, Moyens Informatiques, Calcul Scientifique (Remics)
%+ Laboratoire d'Etude du Combustible (IRSN/DPAM/SEMCA/LEC)
%+ IFP Energies nouvelles (IFPEN)
%A Topin, Vincent
%A Dubois, Frédéric
%A Monerie, Yann
%A Perales, Frédéric
%A Wachs, Anthony
%< avec comité de lecture
%@ 0377-0257
%J Journal of Non-Newtonian Fluid Mechanics
%I Elsevier
%V 166
%N 1-2
%P 63-72
%8 2011
%D 2011
%R 10.1016/j.jnnfm.2010.10.006
%K Non-smooth contactdynamics
%K Contact rheology
%K Immersed avalanches
%K Distributed Lagrange multiplier/fictitious domain
%K Dense particulate flows
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]
%Z Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]
%Z Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph]
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph]
%Z Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph]Journal articles
%X We rely here on a non-smooth contact dynamics (NSCD) approach to treat particle collisions in a direct numerical simulation of a dense particulate flow. Interactions between particles are considered by a non-smooth formulation of particle dynamics at the microscopic scale, which enables one to straight forwardly implement complex contactlaws. The hydrodynamic coupling is achieved by a distributed Lagrange multiplier/fictitious domain (DLM/FD) method . As a preliminary step, the relevance of our NSCD-DLM/FD method is assessed by comparing results of 2D sedimentation simulations with those obtained with a usual molecular dynamics collision model. Then, we use it to investigate how a fully immersed granular packing collapses depending on its initial particle volume fraction, providing clues on the micro-rheology of dense particulate flows.
%G English
%2 https://hal.science/hal-00806645/document
%2 https://hal.science/hal-00806645/file/Art_Topin_al_JNNFM_2011.pdf
%L hal-00806645
%U https://hal.science/hal-00806645
%~ IRSN
%~ IFP
%~ CNRS
%~ LMGC
%~ MIST
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021