物理学报Issue(16)：1-7,7.DOI:10.7498/aps.62.164502
对颗粒物质运动的一致性进行控制的随机力场*
Control of the fluctuation in the uniform granular flow by a random force field*
摘要
Abstract
A normal distribution random force field is introduced into the study of granular flow, and its effect is observed by computer simulations. The results show that the random force almost does not cause changes in average density and velocity in a uniform granular flow, and affects little the fluctuation of the density. The main effect of the random force field is that it increases the fluctuation of the granular velocity and maintains the granular flow at a certain dispersed kinetic energy by competing with the dissipation of the granular system. It is also shown that the dispersed kinetic energy obtained by the random force field is not equally distributed in each degree of freedom, and that the equipartition of energy is difficult to realize in granular system because of its dissipation property.关键词
颗粒物质/随机力/分子动力学模拟Key words
granular matter/random force/molecular dynamics simulation引用本文复制引用
苏涛,冯耀东,赵宏武,黄德财,孙刚..对颗粒物质运动的一致性进行控制的随机力场*[J].物理学报,2013,(16):1-7,7.基金项目
国家重点基础研究发展计划(批准号:2009CB930800)和国家自然科学基金(批准号:10875166,11274355)资助的课题.*Project supported by the National Basic Research Program of China (Grant No.2009CB930800) and the National Natural Science Foundation of China (Grant Nos.10875166,11274355) （批准号:2009CB930800）
