Inertia in the Brazil nut problem
Abstract
The rise dynamics of a large particle, in a granular bed under vertical vibrations, is experimentally studied with an inductive device designed to track the particle while it climbs through the granulate under different conditions. A model based on energy considerations is presented to explain our experimental data, drawing the important conclusion that it is the inertia of the particle, assisted by Reynolds dilatancy, the driven force behind its ascension mechanism. The ascension reveals a friction profile within the column which remains unchanged for different accelerations.
- Publication:
-
Physical Review E
- Pub Date:
- October 2003
- DOI:
- 10.1103/PhysRevE.68.041301
- arXiv:
- arXiv:cond-mat/0205446
- Bibcode:
- 2003PhRvE..68d1301N
- Keywords:
-
- 45.05.+x;
- 64.75.+g;
- General theory of classical mechanics of discrete systems;
- Solubility segregation and mixing;
- phase separation;
- Condensed Matter - Statistical Mechanics
- E-Print:
- 5 pages, 6 figures. Latex