中国物理B ›› 2000, Vol. 9 ›› Issue (7): 515-518.doi: 10.1088/1009-1963/9/7/008

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LATTICE BOLTZMANN METHOD SIMULATION ON THE FLOW OF TWO IMMISCIBLE FLUIDS IN COMPLEX GEOMETRY

方海平, 万荣正, 范乐文   

  1. Research Center for Theoretical Physics and Department of Physics, Fudan University, Shanghai 200433, China
  • 收稿日期:2000-01-03 修回日期:2000-03-05 出版日期:2000-07-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China(Grant Nos. 19704003, 19834070, 19904004), the Fudan Foundation for Young Scientists (Grant No. CH12227), the Beijing International Center for Computational Physics and by the high perfo

LATTICE BOLTZMANN METHOD SIMULATION ON THE FLOW OF TWO IMMISCIBLE FLUIDS IN COMPLEX GEOMETRY

Fang Hai-ping (方海平), Wan Rong-zheng (万荣正), Fan Le-wen (范乐文)   

  1. Research Center for Theoretical Physics and Department of Physics, Fudan University, Shanghai 200433, China
  • Received:2000-01-03 Revised:2000-03-05 Online:2000-07-15 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China(Grant Nos. 19704003, 19834070, 19904004), the Fudan Foundation for Young Scientists (Grant No. CH12227), the Beijing International Center for Computational Physics and by the high perfo

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摘要： The multicomponent nonideal gas lattice Boltzmann model by Shan and Chen (S-C) can be used to simulate the immiscible fluid flow. In this paper, we show that the relaxation constant τ≤1 is a necessary condition for the immiscible fluid flow in the S-C model. In a system with very complex boundary geometry, for 0.8≤τ≤1, the S-C model describes the immiscible flow quite well, and τ=1 is the best.

Abstract: The multicomponent nonideal gas lattice Boltzmann model by Shan and Chen (S-C) can be used to simulate the immiscible fluid flow. In this paper, we show that the relaxation constant $\tau$ ≤ 1 is a necessary condition for the immiscible fluid flow in the S-C model. In a system with very complex boundary geometry, for 0.8≤ $\tau$ ≤1, the S-C model describes the immiscible flow quite well, and $\tau$ =1 is the best.

Key words: lattice boltzmann method, immiscible fluid flow

中图分类号:  (Navier-Stokes equations)

  • 47.10.ad
47.11.Qr (Lattice gas)