FORCES ON THE WALLS AND STAGNATION ZONES IN A HOPPER FILLED WITH GRANULAR MATERIAL

Authors
RISTOW GH HERRMANN HJ
Citation
Gh. Ristow et Hj. Herrmann, FORCES ON THE WALLS AND STAGNATION ZONES IN A HOPPER FILLED WITH GRANULAR MATERIAL, Physica. A, 213(4), 1995, pp. 474-481
Citations number
58
Categorie Soggetti
Physics
Journal title
Physica. A → ACNP
ISSN journal
03784371
Volume
213
Issue
4
Year of publication
1995
Pages
474 - 481
Database
ISI
SICI code
0378-4371(1995)213:4<474:FOTWAS>2.0.ZU;2-S
Abstract
We measure the pressure and the shear forces acting on the walls of an outflowing hopper using Molecular Dynamics simulations. We find very strong fluctuations which for large opening angles follow a power spec trum but have white noise for smaller angles. We also calculate the sh ape of the stagnation zones that appear during funnel flow and compare it to the experimentally observed ones.