Granular flow from a silo: Discrete-particle simulations in three dimensions |
| |
Authors: | D Hirshfeld DC Rapaport |
| |
Institution: | (1) Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel, IL |
| |
Abstract: | Molecular (or granular) dynamics methods are used to study the gravity-driven flow of granular material through a horizontal
aperture in three dimensions. The grains are spherical and modeled using a short-range repulsive interaction, together with
normal and tangential frictional damping forces. The material is contained in a rough-walled cylindrical container with a
circular hole in its base, and to permit flow measurements under steady-state conditions a continuous feed approach is employed
in which exiting grains are replaced at the upper surface of the material. The dependence of flow velocity and discharge rate
on aperture diameter is found to agree with experiment; other quantities such as the kinetic energy and pressure distributions
are also examined.
Received 5 June 2000 and Received in final form 21 September 2000 |
| |
Keywords: | PACS 45 70 -n Granular systems – 02 70 Ns Molecular dynamics and particle methods |
本文献已被 SpringerLink 等数据库收录! |
|