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Relative energy dissipation-induced effective attraction in granular mixture |
Jia Yan(贾燕), Yang Xian-Qing(杨先清)†, Deng Min(邓敏), Guo Hai-Ping(郭海萍), and Ye Jian-Lan(叶见兰) |
College of Science, China University of Mining and Technology, Xuzhou 221116, China |
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Abstract This paper presents the investigation of the clustering of the intruders in a vertically vibrated granular bed by means of event-driven simulations. The results indicate that the position of intruders in the vertical direction is not a key factor for their aggregation. Energy dissipation of the intruders and host particles are calculated in the process of intruder-host and host–host collisions. The relative energy dissipation of the intruders to that of the host particles is obtained. We find that clustering of the intruders happens when the relative energy dissipation is negative. The conclusion is verified when the restitution coefficient, density and diameter of the intruders are varied.
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Received: 01 April 2010
Revised: 11 June 2010
Accepted manuscript online:
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PACS:
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45.70.Mg
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(Granular flow: mixing, segregation and stratification)
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Fund: Project supported by the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (Grant No. 50921002). |
Cite this article:
Jia Yan(贾燕), Yang Xian-Qing(杨先清), Deng Min(邓敏), Guo Hai-Ping(郭海萍), and Ye Jian-Lan(叶见兰) Relative energy dissipation-induced effective attraction in granular mixture 2010 Chin. Phys. B 19 128202
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