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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2004, Vol. 5 Issue (1): 111-116    DOI: 10.1631/jzus.2004.0111
Energy Engineering     
Sedimentation of a single particle between two parallel walls
SHAO Xue-ming, LIN Jian-zhong, YU Zhao-sheng
Department of Mechanics, Zhejiang University, Hangzhou 310027, China; Department of Mechanical and Mechatronic Engineering, the University of Sydney, NSW 2006, Australia
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Abstract  The sedimentation of a single circular particle between two parallel walls was studied by means of direct numerical simulation (DNS) and experiment. The improved implementation of distributed Lagrange multiplier/fictitious domain method used in our DNS is a promising new way for simulation of particulate flows. The settling behaviors of the particle are presented ranging in Reynolds number from 0 to about 700, which showed that our results for low Reynolds numbers agreed well with that reported before. Nevertheless, for higher Reynolds numbers our results were different from theirs. The long-term mean equilibrium positions in our results were all on the centerline, but not at off-center position as reported before. In order to validate our simulation, experiments were also conducted. The results showed that the sedimenting behavior simulated in this paper agreed well with our experiment result.

Key words： Sedimentation      Circular particle      Distributed Lagrange multiplier/fictitious domain method     
Received: 04 November 2002     
CLC:  O359  
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YU Zhao-sheng
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Cite this article:

SHAO Xue-ming, LIN Jian-zhong, YU Zhao-sheng. Sedimentation of a single particle between two parallel walls. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2004, 5(1): 111-116.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2004.0111     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2004/V5/I1/111

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