Granular Matter

, 18:8 | Cite as

Simulation of grain segregation under horizontal rotational oscillations

  • Xue-Dong Ma
  • Yan-Bing Zhang
  • Ying Liu
  • Xiao-Wen Zheng
Original Paper
First Online:
Received:

Abstract

The segregation of paddy rice and short stalks under horizontal rotational oscillations is investigated through numerical simulation by using a 3D discrete element method. Simulation results show that paddy rice and short stalk particles are divided into two layers under periodic horizontal rotational oscillations and that short stalks finally move to the top layer of paddy rice. The grain segregation mechanism is analyzed in detail on the basis of theory of gap filling, momentum, and kinetic energy. The effects of vibration parameters (frequency and amplitude) on grain segregation are determined by using the volume concentration index of materials. In a certain range of vibration parameters, frequency and amplitude significantly influence early segregation, and the grain segregation effects caused by different parameters are basically the same along with the increase in vibration time.

Keywords

Horizontal rotational oscillation Grain segregation  Discrete element method Numerical simulation 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.School of Mechanical Engineering and AutomationUniversity of Science and Technology LiaoningAnshanChina
  2. 2.School of Mechanical, Electronic and Information EngineeringChina University of Mining and TechnologyBeijingChina

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