Influence of the driving rate in a two-dimensional rice pile model

被引:1
|
作者
Lorincz, Kinga A. [1 ]
Wijngaarden, Rinke J. [1 ]
机构
[1] Vrije Univ, Div Phys & Astron, Fac Sci, NL-1081 HV Amsterdam, Netherlands
来源
PHYSICAL REVIEW E | 2008年 / 77卷 / 06期
关键词
D O I
10.1103/PhysRevE.77.066110
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We study the influence of the driving rate in the two-dimensional Oslo rice pile model. We find that the usual power-law behavior of the avalanche size distribution still holds for small avalanches, independent of the driving rate. The signature of fast driving is, however, the increase of the incidence rate of large avalanches. For larger driving rates, this increase is more prominent and spreads to smaller avalanche sizes. As a result, the mass flow due to large avalanches is increased much more than would be expected from an increase in driving rate alone. Fast driving leads to a dramatic increase in devastating avalanches, just before the continuous flow regime is reached.
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页数:4
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