Dynamic properties of the two-dimensional density-driven segregation  

作　　者：Yao-Dong Feng Can-Can Liu Qing-Fan Shi Gang Sun 

机构地区：[1]Department of Physics,Beijing Institute of Technology,Beijing 100081,China [2]Beijing Key Laboratory for Nanomaterials and Nanodevices,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [3]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Communications in Theoretical Physics》2020年第7期111-115,共5页理论物理通讯（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.10875166 and 11274355)。

摘　　要：We discuss some dynamic properties of the segregation in vertically vibrated binary granular mixtures with the same size.We present a method that can accurately calculate the order parameter in the simulation.By use of the time evolution of the order parameter,we have found that the convergence of the segregated state depends at least on the vibration amplitude,the total mass of the particles,and also the density difference between the lighter and heavier particles.The convergence is quicker for larger vibration amplitude,lighter total mass of the particles and more density difference between the lighter and heavier particles.We have also found that thefluctuation is larger even after the steady state is reached for lighter total mass of the particles and less density difference between the lighter and heavier particles.

关 键 词：granular matter segregation effect molecular dynamic simulation 

分 类 号：TB302[一般工业技术—材料科学与工程]