DEM simulation of granular segregation in two-compartment system under zero gravity |
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| Affiliation: | 1.Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condense Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2.School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this paper,granular segregation in a two-compartment cell in zero gravity is studied numerically by DEM simulation.In the simulation using a virtual window method we find a non-monotonic flux,a function which governs the segregation.A parameter is used to quantify the segregation.The effect of three parameters:the total number of particles N,the excitation strength F,and the position of the window coupling the two compartments,on the segregation and the waiting time%are investigated.It is found that the segregation observed in zero gravity exists and does not depend on the excitation strength F.The waiting time T,however,depends strongly on F:the higher the F,the lower the waiting time V,The simulation results are important in guiding the SJ-10 satellite microgravity experiments. |
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| Keywords: | DEM simulation granular gas microgravity segregation |
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