Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/69014
標題: Collective motion of inelastic particles between two oscillating walls
作者: Chung, F.F.
Liaw, S.S.
Chang, W.C.
關鍵字: Granular system;Collective motion;Phase transition;external vibrations;bouncing ball;spheres;hydrodynamics;fluidization;dimensions;monolayer;dynamics;collapse;columns
Project: Granular Matter
期刊/報告no:: Granular Matter, Volume 13, Issue 6, Page(s) 787-794.
摘要: 
This study theoretically considers the motion of N identical inelastic particles between two oscillating walls. The particles' average energy increases abruptly at certain critical filling fractions, wherein the system changes into a solid-like phase with particles clustered in their compact form. Molecular dynamics simulations of the system show that the critical filling fraction is a decreasing function of vibration amplitude independent of vibration frequency, which is consistent with previous experimental results. This study considers the entire group of particles as a giant pseudo-particle with an effective size and an effective coefficient of restitution. The N-particles system is then analytically treated as a one-particle problem. The critical filling fraction's dependence on vibration amplitude can be explained as a necessary condition for a stable resonant solution. The fluctuation to the system's mean flow energy is also studied to show the relation between the granular temperature and the system phase.
URI: http://hdl.handle.net/11455/69014
ISSN: 1434-5021
DOI: 10.1007/s10035-011-0291-2
Appears in Collections:期刊論文

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