中国物理B ›› 2004, Vol. 13 ›› Issue (10): 1657-1664.doi: 10.1088/1009-1963/13/10/014

• NUCLEAR PHYSICS • 上一篇    下一篇

Lattice-Boltzmann simulation of particle-laden flow over a backward-facing step

陈胜, 施保昌, 柳朝晖, 贺铸, 郭照立, 郑楚光   

  1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2003-10-08 修回日期:2003-12-14 出版日期:2005-06-20 发布日期:2005-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60073044), and the State Key Development Programme for Basic Research of China (Grant No G1999022207).

Lattice-Boltzmann simulation of particle-laden flow over a backward-facing step

Chen Sheng (陈胜), Shi Bao-Chang (施保昌), Liu Zhao-Hui (柳朝晖), He Zhu (贺铸), Guo Zhao-Li (郭照立), Zheng Chu-Guang (郑楚光)   

  1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2003-10-08 Revised:2003-12-14 Online:2005-06-20 Published:2005-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60073044), and the State Key Development Programme for Basic Research of China (Grant No G1999022207).

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摘要： This paper deals with the numerical simulation of gas－solid two-phase flows in an Eulerian－Lagrangian scheme. The particle tracks are calculated using a recently developed exponential Lagrangian scheme, and the approach presently used for the computation of fluid phase is based on a modified Lattice-BGK model. Different from earlier publications, the present study employs a two-way coupling mechanism to handle the interactions between carrier phase and dispersed phase in the model. This new model is applicable to simulating gas－solid two-phase flows. For example, based on the scheme, we have recaptured some phenomena of planar laminar particle-laden flow over a backward-facing step in this research, and found a new interesting phenomenon.

Abstract: This paper deals with the numerical simulation of gas－solid two-phase flows in an Eulerian－Lagrangian scheme. The particle tracks are calculated using a recently developed exponential Lagrangian scheme, and the approach presently used for the computation of fluid phase is based on a modified Lattice-BGK model. Different from earlier publications, the present study employs a two-way coupling mechanism to handle the interactions between carrier phase and dispersed phase in the model. This new model is applicable to simulating gas－solid two-phase flows. For example, based on the scheme, we have recaptured some phenomena of planar laminar particle-laden flow over a backward-facing step in this research, and found a new interesting phenomenon.

Key words: lattice-BGK method, particle-laden flow, two-way coupling

中图分类号:  (Particle-laden flows)

  • 47.55.Kf
47.15.-x (Laminar flows)