Acta Mechanica Sinica

, Volume 20, Issue 1, pp 32–45 | Cite as

Study on the interaction of sedimenting cylindrical particles in still fluid

  • Lin Jianzhong
  • Shao Xueming
  • Shi Xing
  • Yu Zhaosheng


The sedimentations of two cylindrical particles in three different initial relative positions are numerically simulated using the lattice Boltzmann method. The movement characteristics and particle interactions during their sedimentation are presented and discussed in detail. The results show that, (i) if the two particles are released parallel but separated horizontally, they push away each other, rotate inwards and separate horizontally as they fall; (ii) if the two particles are released parallel but separated vertically, the sedimentation behavior can be classified into three stages: trailing, tumbling and separating; (iii) if the two particles are released perpendicular but separated vertically, the sedimentation behavior can be characterized as: trailing and rotating, touching and sliding. In order to validate our simulation, experiments were also conducted and the results agree well with the numerical ones.

Key Words

cylindrical particle sedimentation lattice Boltzmann method interaction 


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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 2004

Authors and Affiliations

  • Lin Jianzhong
    • 1
  • Shao Xueming
    • 1
  • Shi Xing
    • 1
  • Yu Zhaosheng
    • 2
  1. 1.Department of Mechanics, the State Key Laboratory of Fluid Power Transmission and ControlZhejiang UniversityHangzhouChina
  2. 2.Department of Mechanical and Mechatronic EngineeringUniversity of SydneyAustralia

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