Control of the fluctuation in the uniform granular flow by a random force field

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	Control of the fluctuation in the uniform granular flow by a random force field
	Su, T ; Feng, YD ; Zhao, HW ; Huang, DC ; Sun, G
刊名	ACTA PHYSICA SINICA
	2013
卷号	62 期号:16
关键词	granular matter random force molecular dynamics simulation
ISSN号	1000-3290
通讯作者	Sun, G (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Key Lab Soft Matter Phys, Beijing 100190, Peoples R China.
中文摘要	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.
资助信息	National Basic Research Program of China [2009CB930800]; National Natural Science Foundation of China [10875166, 11274355]
语种	中文
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56839]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Su, T,Feng, YD,Zhao, HW,et al. Control of the fluctuation in the uniform granular flow by a random force field[J]. ACTA PHYSICA SINICA,2013,62(16).
APA	Su, T,Feng, YD,Zhao, HW,Huang, DC,&Sun, G.(2013).Control of the fluctuation in the uniform granular flow by a random force field.ACTA PHYSICA SINICA,62(16).
MLA	Su, T,et al."Control of the fluctuation in the uniform granular flow by a random force field".ACTA PHYSICA SINICA 62.16(2013).