Directed segregation in compartmentalized bi-disperse granular gas

doi:10.1088/1674-1056/21/1/014501

中国物理B ›› 2012, Vol. 21 ›› Issue (1): 14501-014501.doi: 10.1088/1674-1056/21/1/014501

Directed segregation in compartmentalized bi-disperse granular gas

李寅阊¹, 张祺¹, Sajjad Hussain Shah², 崔非非², 厚美瑛²

(1)Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (2)Physics Department, Beijing Institute of Technology, Beijing 100081, China; Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2011-08-25 修回日期:2011-09-19 出版日期:2012-01-15 发布日期:2012-01-20
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10720101074 and 10874209), the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KJCX2-YW-L08), and CSSAR and CNES.

Directed segregation in compartmentalized bi-disperse granular gas

Sajjad Hussain Shah^a)b), Li Yin-Chang(李寅阊)^b), Cui Fei-Fei(崔非非)^a)b), Zhang Qi(张祺)^b), and Hou Mei-Ying(厚美瑛)^a)b)†

^a Physics Department, Beijing Institute of Technology, Beijing 100081, China; ^b Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Received:2011-08-25 Revised:2011-09-19 Online:2012-01-15 Published:2012-01-20
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10720101074 and 10874209), the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KJCX2-YW-L08), and CSSAR and CNES.

摘要/Abstract

摘要： A bi-disperse granular gas in an asymmetrical two-compartment system is studied experimentally. The presence of asymmetry within the range of our experimental parameters results in a directed segregated state and a directed clustering state. This deterministic system does not depend on the initial conditions. A modified flux model based on Lohse's flux model for bi-disperse granular gases is derived. The modified flux model explains qualitatively the experimental results.

关键词: granular matter, segregation, nonlinear dynamics

Abstract: A bi-disperse granular gas in an asymmetrical two-compartment system is studied experimentally. The presence of asymmetry within the range of our experimental parameters results in a directed segregated state and a directed clustering state. This deterministic system does not depend on the initial conditions. A modified flux model based on Lohse's flux model for bi-disperse granular gases is derived. The modified flux model explains qualitatively the experimental results.

Key words: granular matter, segregation, nonlinear dynamics

中图分类号: (Pattern formation)

45.70.Qj

Sajjad Hussain Shah, 李寅阊, 崔非非, 张祺, 厚美瑛. Directed segregation in compartmentalized bi-disperse granular gas[J]. 中国物理B, 2012, 21(1): 14501-014501.

Sajjad Hussain Shah, Li Yin-Chang(李寅阊), Cui Fei-Fei(崔非非), Zhang Qi(张祺), and Hou Mei-Ying(厚美瑛) . Directed segregation in compartmentalized bi-disperse granular gas[J]. Chin. Phys. B, 2012, 21(1): 14501-014501.

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Directed segregation in compartmentalized bi-disperse granular gas

Directed segregation in compartmentalized bi-disperse granular gas

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