| Autor: |
Magalhães CF; Departamento de Física, Universidade Federal de Minas Gerais, Caixa Postal 702, 30161-970 Belo Horizonte, MG, Brazil., Moreira JG, Atman AP |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review. E, Statistical, nonlinear, and soft matter physics [Phys Rev E Stat Nonlin Soft Matter Phys] 2010 Nov; Vol. 82 (5 Pt 1), pp. 051303. Date of Electronic Publication: 2010 Nov 12. |
| DOI: |
10.1103/PhysRevE.82.051303 |
| Abstrakt: |
We present a molecular-dynamics study of discharges in a granular pile evincing a catastrophic regime depending on the outlet size. The avalanche size distribution function suggests a phase transition where the height of the remaining pile is taken as the order parameter. Our results indicate that there is a critical outlet size beyond which discharges become catastrophic and the initial pile is split in two minor piles. As the system size increases, finite-size analysis indicates that the critical orifice width converges to a finite value. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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