沙堆边界确定方法  

Determination of the Sand Drift and Its Boundary

作　　者：尹建业[1] 闫民[1] 刘晨昊[1] 

机构地区：[1]北京林业大学工学院,北京100083

出　　处：《科技导报》2008年第3期57-59,共3页Science & Technology Review

基　　金：国家自然科学基金项目(10572027)

摘　　要：在流固耦合问题研究中,往往需要确定流体与固体的分界线或分界面,以确定其流固耦合效应。本文用散体单元法(DEM)研究风沙运动时,考虑了风沙运动中沙堆与空气交界不断变化的基本特点,给出了一种确定存在沙粒跃移的沙堆与空气边界的方法。In dealing with the coupling between fluid and solid,the boundary or interface between the fluid and solid needs to be determined. DEM （Discrete Element Method） is used to study the movement of wind-blown sand. With due consideration of the basic features of the wind-blown movement with the interface of sand drift and air being in constant variation,this paper proposes a method to determine the boundary between air and sand drift with saltation sand.

关 键 词：散体单元法 跃移 沙堆边界 流固耦合 

分 类 号：P931.3[天文地球—自然地理学]