Distribution- Versus Correlation-Induced Anomalous Transport in Quenched Random Velocity Fields

被引：67

作者：

Dentz, Marco ^{[1
]}

Bolster, Diogo ^{[2
]}

机构：

[1] Spanish Natl Res Council IDAEA CSIC, Barcelona 08034, Spain

[2] Univ Notre Dame, Dept Civil Engn & Geol Sci, Environm Fluid Dynam Labs, Notre Dame, IN 46556 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 24期

关键词：

CHAOTIC SYSTEMS; DIFFUSION; MEDIA;

D O I：

10.1103/PhysRevLett.105.244301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study mechanisms of anomalous transport in quenched random media. Broad disorder point distributions and strong disorder correlations cause anomalous transport and can lead to the same anomalous scaling laws for the mean and variance of the particle displacements. The respective mechanisms, however, are fundamentally different. This difference is reflected in the spatial particle densities and first passage time distributions, which provide an indicator to identify the origins of anomalous transport.

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