CaltechAUTHORS
  A Caltech Library Service

Effects of vertical vibration on hopper flows of granular material

Wassgren, C. R. and Hunt, M. L. and Freese, P. J. and Palamara, J. and Brennen, C. E. (2002) Effects of vertical vibration on hopper flows of granular material. Physics of Fluids, 14 (10). pp. 3439-3448. ISSN 1070-6631. http://resolver.caltech.edu/CaltechAUTHORS:WASpf02

[img]
Preview
PDF
See Usage Policy.

1473Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:WASpf02

Abstract

The discharge of granular material from a hopper subject to vertical sinusoidal oscillations was investigated using experiments and discrete element computer simulations. With the hopper exit closed, side-wall convection cells are observed, oriented such that particles move up along the inclined walls of the hopper and down at the center line. The convection cells are a result of the granular bed dilation during free fall and the subsequent interaction with the hopper walls. The mass discharge rate for a vibrating hopper scaled by the discharge rate without vibration reaches a maximum value at a dimensionless velocity amplitude just greater than 1. Further increases in the velocity decrease the discharge rate. The decrease occurs due to a decrease in the bulk density of the discharging material when vibration is applied.


Item Type:Article
Additional Information:Received 30 August 2001; accepted 9 July 2002; published 3 September 2002.
Record Number:CaltechAUTHORS:WASpf02
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:WASpf02
Alternative URL:http://dx.doi.org/10.1063/1.1503354
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:168
Collection:CaltechAUTHORS
Deposited By: Christopher Brennen
Deposited On:09 Nov 2004
Last Modified:26 Dec 2012 08:39

Repository Staff Only: item control page