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Effect of damping on segregation of size-type binary granularsystems in a rotating horizontal drum

Gao Hong-Li Zhao Yong-Zhi Liu Ge-Si Chen You-Chuan Zheng Jin-Yang

Effect of damping on segregation of size-type binary granularsystems in a rotating horizontal drum

Gao Hong-Li, Zhao Yong-Zhi, Liu Ge-Si, Chen You-Chuan, Zheng Jin-Yang
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  • Received Date:  06 May 2010
  • Accepted Date:  20 August 2010
  • Published Online:  15 July 2011

Effect of damping on segregation of size-type binary granularsystems in a rotating horizontal drum

  • 1. (1)Department of Chemical and Biochemical Engineering, Institute of Process Equipment,Zhejiang University, Hangzhou 310027, China; (2)Department of Chemical and Biochemical Engineering, Institute of Process Equipment,Zhejiang University, Hangzhou 310027, China;Guangdong University of Petrochemical Technology, Maoming 525000, China

Abstract: In this paper, the segregation patterns of size-type binary granular systems with different damp coefficients in a rotating horizontal drum are simulated by the discrete element model. The process and the mechanism of segregation are studied, and the effects of damping on segregation model of size-type binary granular system in a rotating horizontal drum are discussed. The simulation results show that the segregation process and the flow pattern of granulae in a flowing layer depend strongly on damping. According to the simulation results we predict that the radial segregation patterns that form in a size-type binary granula system in a thin rotating horizontal drum will be the sun pattern when the damp coefficients is in a middle value range, otherwise, the moon pattern will appear.

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