Sedimentation of granular columns in the viscous and weakly inertial regimes
Langue
en
Article de revue
Ce document a été publié dans
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics. 2013-10, vol. 88, n° 4, p. 042204 (1-4)
American Physical Society
Résumé en anglais
We investigate the dynamics of granular columns of point particles that interact via long-range hydrodynamic interactions and fall under the action of gravity. We investigate the influence of inertia using the Green's ...Lire la suite >
We investigate the dynamics of granular columns of point particles that interact via long-range hydrodynamic interactions and fall under the action of gravity. We investigate the influence of inertia using the Green's function for the Oseen equation. The initial conditions (density and aspect ratio) are systematically varied. Our results suggest that universal self-similar laws may be sufficient to characterize the temporal and structural evolution of the granular columns. A characteristic time above which an instability is triggered (which may enable the formation of clusters) is also retrieved and discussed.< Réduire
Mots clés en anglais
Granular flow: mixing - segregation and stratification
Chemical physics
Sedimentation and migration
Project ANR
/ - ANR-09-JCJC-0092
Origine
Importé de halUnités de recherche