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The anisotropy of free path in a vibro-fluidized granular gas
Mei, Yifeng1; Chen, Yanpei1; Wang, Wei1; Hou, Meiying2
2016-08-01
发表期刊CHINESE PHYSICS B
ISSN1674-1056
卷号25期号:8页码:084501
摘要

The free path of a vibro-fluidized two-dimensional (2D) inelastic granular gas confined in a rectangular box is investigated by 2D event-driven molecular simulation. By tracking particles in the simulation, we analyze the local free path. The probability distribution of the free path shows a high tail deviating from the exponential prediction. The anisotropy of the free path is found when we separate the free path to x and y components. The probability distribution of y component is exponential, while x component has a high tail. The probability distribution of angle between the relative velocity and the unit vector joined two particle centers deviates from the distribution of two random vectors, indicating the existence of the dynamic heterogeneities in our system. We explain these results by resorting to the kinetic theory with two-peak velocity distribution. The kinetic theory agrees well with the simulation result.

关键词Free Path Granular Gases Two-peak Velocity Distribution
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1088/1674-1056/25/8/084501
收录类别SCI
语种英语
关键词[WOS]MESOSCOPIC SYSTEMS ; FLOWS ; DISTRIBUTIONS ; FLUCTUATIONS
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
项目资助者National Basic Research Program of China(2012CB215003) ; National Natural Science Foundation of China(91334204) ; Chinese Academy of Sciences(XDA07080100) ; China Postdoctoral Science Foundation(2014M561071)
WOS记录号WOS:000384264300038
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21617
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Soft Matter Phys, Beijing Natl Lab Condense Matter Phys, Inst Phys, Beijing 100190, Peoples R China
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GB/T 7714
Mei, Yifeng,Chen, Yanpei,Wang, Wei,et al. The anisotropy of free path in a vibro-fluidized granular gas[J]. CHINESE PHYSICS B,2016,25(8):084501.
APA Mei, Yifeng,Chen, Yanpei,Wang, Wei,&Hou, Meiying.(2016).The anisotropy of free path in a vibro-fluidized granular gas.CHINESE PHYSICS B,25(8),084501.
MLA Mei, Yifeng,et al."The anisotropy of free path in a vibro-fluidized granular gas".CHINESE PHYSICS B 25.8(2016):084501.
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