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Sedimentation of Rigid Cylindrical Particles with Mechanical Contacts |
| LIN Jian-Zhong1;WANG Ye-Long1;James A. Olsen2 |
| 1Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027
2Department of Mechanical Engineering, Pulp and Paper Centre, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada |
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| Cite this article: |
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LIN Jian-Zhong, WANG Ye-Long, James A. Olsen 2005 Chin. Phys. Lett. 22 628-631 |
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Abstract A collision model of two cylindrical particles is put forward. Based on the model the sedimentation of rigid cylindrical particles with mechanical contacts is simulated numerically by using the lattice Boltzmann method. Some numerical results are compared with the experimental ones given by us and others, and good agreements are found. In the sedimentation process, particles will rotate and drift at any initial orientation and terminal Reynolds number. The orientation, lateral position, drifty and sedimenting velocity of particles change periodically at small terminal Reynolds number. With the increasing terminal Reynolds number, the periodicity disappears, and an inverted T-structure forms. This structure appears more quickly and lasts for a longer time at larger terminal Reynolds number.
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| Keywords:
47.55.Kf
47.11.+j
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Published: 01 March 2005
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