Vibration-induced size separation in granular media: The convection connection
- 14 June 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 70 (24), 3728-3731
- https://doi.org/10.1103/physrevlett.70.3728
Abstract
We have investigated the rise of a single large glass bead through a vibrated cylindrical column of smaller particles and found that vibration-induced size separation in this geometry arises from convective processes rather than from local rearrangements as had been proposed previously. A convection cycle, rising in the middle and dropping in a thin stream along the walls of the cell, is responsible for all particle movement. Particles larger than the width of the thin downward convection zone are carried to the top of the column and then trapped, resulting in size segregation. For a variety of accelerations the position of the rising particle can be scaled onto a single curve.Keywords
This publication has 20 references indexed in Scilit:
- New origin of a convective motion: Elastically induced convection in granular materialsPhysical Review Letters, 1992
- Three-dimensional model for particle-size segregation by shakingPhysical Review Letters, 1992
- Recent developments in solids mixingPowder Technology, 1990
- Instability in a Sand HeapPhysical Review Letters, 1989
- Powder segregation due to vibrationPowder Technology, 1977
- The segregation of particulate materials. A reviewPowder Technology, 1976
- Observation of particle segregation in vibrated granular systemsPowder Technology, 1973
- Segregation Kinetics of Particulate Solids Systems IIIJournal of Pharmaceutical Sciences, 1965
- Segregation Kinetics of Particulate Solids Systems IJournal of Pharmaceutical Sciences, 1964
- XVII. On a peculiar class of acoustical figures; and on certain forms assumed by groups of particles upon vibrating elastic surfacesPhilosophical Transactions of the Royal Society of London, 1831