ONSET OF CONVECTION IN MOLECULAR-DYNAMICS SIMULATIONS OF GRAINS

Authors
LUDING S CLEMENT E BLUMEN A RAJCHENBACH J DURAN J
Citation
S. Luding et al., ONSET OF CONVECTION IN MOLECULAR-DYNAMICS SIMULATIONS OF GRAINS, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 50(3), 1994, pp. 180001762-180001765
Citations number
26
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
50
Issue
3
Year of publication
1994
Pages
180001762 - 180001765
Database
ISI
SICI code
1063-651X(1994)50:3<180001762:OOCIMS>2.0.ZU;2-7
Abstract
We investigate granular materials undergoing vibrations, using a molec ular dynamics (MD) algorithm, and we display limitations of the numeri cal method. We show that previously reported convection patterns obtai ned through MD may be due to the microscopic interactions. MD calculat ions often use parameters which Lead to unphysically large contact tim es between beads and to large density fluctuations. These in turn enha nce the appearance of convection rolls, a numerical finding without ex perimental counterpart.