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An Effective Method on Two-Dimensional Lattice Boltzmann Simulations with Moving Boundaries |
| LI Hua-Bing1,2, ZHANG Chao-Ying3;LU Xiao-Yang4;FANG Hai-Ping1 |
| 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, PO Box 800-204, Shanghai 2018002Department of Information Material Science and Engineering, Guilin University of Electronic Technology,Guilin 5410043College of Physics and Information Technology, Guangxi Normal University, Guilin 5410044Surface Laboratory and Department of Physics, Fudan University, Shanghai 200433 |
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LI Hua-Bing, ZHANG Chao-Ying, LU Xiao-Yang et al 2007 Chin. Phys. Lett. 24 3458-3461 |
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Abstract We propose a lattice Boltzmann scheme for two-dimensional complex boundaries moving in fluid flow. The hydrodynamic forces exerting on the moving boundaries are calculated based on a stress-integration method proposed before, but the extrapolation procedure is avoided, and the
stability of this model is improved. The accuracy and robustness are demonstrated by numerical simulations of a circular particle settling in a two-dimensional vertical channel. The numerical convergence is studied by varying the time-step and the dimensionless particle sizes.
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Received: 16 March 2007
Published: 03 December 2007
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