Open AccessNumerical modelling of finite-size particle collisions in a viscous fluid
Author(s) -
Jorge César Brändle de Motta,
Wim-Paul Breugem,
B. Gazanion,
Jean-Luc Estivalézes,
S. Vincent,
Éric Climent
Publication year - 2013
Publication title -
physics of fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.188
H-Index - 180
eISSN - 1089-7666
pISSN - 1070-6631
DOI - 10.1063/1.4817382
Subject(s) - physics , mechanics , collision , particle (ecology) , range (aeronautics) , stokes number , smoothed particle hydrodynamics , lubrication , viscous liquid , particle laden flows , statistical physics , classical mechanics , coefficient of restitution , two phase flow , reynolds number , thermodynamics , turbulence , aerospace engineering , flow (mathematics) , oceanography , geology , computer security , computer science , engineering
A general model is presented for short-range hydrodynamic interactions and head-on particle-particle/wall collisions. The model has been embedded in two distinct numerical methods for fully resolved simulation of finite-size particles in a viscous fluid. It accounts for the material properties of the particles and lubrication effects prior to collision that cannot be fully resolved on a fixed grid. We demonstrate that the model is able to reproduce experimental data for the coefficient of restitution of particle-wall collisions over a wide range of Stokes number based on the particle impact velocity. The set of model parameters we selected and more generally the modelling approach we propose can be efficiently used for fully resolved simulations of moderately dense solid-liquid suspensions
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