Surface flows of granular materials:: a short introduction to some recent models

被引：40

作者：

Aradian, A ^{[1
]}

Raphaël, É ^{[1
]}

de Gennes, PG ^{[1
]}

机构：

[1] Coll France, Phys Mat Condensee Lab, CNRS, URA 792, F-75231 Paris 05, France

来源：

COMPTES RENDUS PHYSIQUE | 2002年 / 3卷 / 02期

关键词：

granular materials; avalanches; surface flows;

D O I：

10.1016/S1631-0705(02)01304-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a short review of recent theoretical descriptions of flows occuring at the surface of granular piles, and focus mainly on two models: the phenomenological 'BCRE' model and the hydrodynamic model, based on Saint-Venant equations. Both models distinguish a 'static phase' and a 'rolling' phase inside the granular packing and provide coupled equations for the evolutions of the height of each of these phases, which prove similar in both approaches. The BCRE description provides a very intuitive picture of the flow, whereas the Saint-Venant hydrodynamic description establishes a general and rigorous framework for granular flow studies. (C) 2002 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

引用

页码：187 / 196

页数：10

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