%0 Journal Article
%T The molecular dynamics simulation of the effect of channel width on two-dimensional granular flow<br>二维颗粒流通道宽度效应的分子动力学模拟
%A Hu Guo-Qi
%A Zhang Xun-Sheng
%A Bao De-Song
%A Tang Xiao-Wei
%A <br>胡国琦
%A 张训生
%A 鲍德松
%A 唐孝威
%J 物理学报
%D 2004
%I 
%X In this paper,we use the molecular dynamics simulation to study the phenomena that the granular flow changes from dilute flow to dense flow by increasing the channel width at a fixed orifice of 9 5 d (d is the diameter of grains). In the area over the orifice,the density of flow increases and the granular temperature decreases with the increase of channel width. The change from dilute flow to dense flow begins at a channel width of 24 d ,a lower granular temperature( T/m =0 05 J/kg) and a larger coordination number of 1 2 The mechanism is a structural change in the granular flow,since a wider channel results in more horizontal chains of particles and a lower temperature makes these chains more stable.
%K granular matter
%K granular flow
%K computer simulation<br>颗粒物质
%K 颗粒流
%K 计算机模拟
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=9FE045120BC3D959&yid=D0E58B75BFD8E51C&vid=8E6AB9C3EBAAE921&iid=59906B3B2830C2C5&sid=26C62ECC272B8495&eid=FC68B1F5299D00D4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=14