Mathematical modeling of snow entrainment in avalanche motion

被引：39

作者：

Eglit, ME ^{[1
]}

Demidov, KS ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Mech & Math, Moscow 119992, Russia

来源：

COLD REGIONS SCIENCE AND TECHNOLOGY | 2005年 / 43卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

snow avalanches; entrainment; mathematical models; numerical study;

D O I：

10.1016/j.coldregions.2005.03.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The entrainment of snow plays an important role in snow avalanche dynamics. Various ways of incorporating the entrainment effect into avalanche mathematical models are discussed in this paper. The results of calculations using a variety of formulae for the entrainment rate that have been proposed for bed erosion by flows of various physical natures are presented. For various studied entrainment laws it is found that in motion at a steep slope the entrainment takes place in a frontal part of an avalanche. The motion of an avalanche depends mainly on the total depth of the entrainable snow layer and on the length of the entrainment zone, but only weakly on the form of the entrainment law. However the length of an entrainment zone depends on the values of the coefficients entering the entrainment law. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：10 / 23

页数：14

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