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Fluctuations of particle motion in granular avalanches - from the microscopic to the macroscopic scales | | Ziwei Wang
; Jie Zhang
; | | Date: |
23 Oct 2014 | | Abstract: | Fluctuations play an important role in the study of phase transition in
equilibrium thermodynamical systems. As a classical non-equilibrium system,
granular materials can exhibit a solid-like to a liquid-like transition and an
accompanied inverse liquid-like to a solid-like transition during the process
of an avalanche, resembling phase transitions in equilibrium systems. In this
study, we have investigated the fluctuations of particle motion, i.e. the
non-affine motion, during the avalanche process, discovering a rich dynamics
from the microscopic to the macroscopic scales. This study uncovers the
disordered characteristics of the avalanche process at the particle level; at
the same time, it also uncovers the temporal correlations among the geometrical
and mechanical quantities at the macroscopic level, indicating close
connections among different important physical quantities of such a process. | | Source: | arXiv, 1410.6219 | | Services: | Forum | Review | PDF | Favorites | |
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