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Improved lattice Boltzmann model for multi-component diffusion flow with large pressure difference

Author

Listed:
  • Fu-Min Liu

    (School of Mechanical Engineering, Tongji University, 4800 Caoan Highway, Shanghai, China)

  • An-Lin Wang

    (School of Mechanical Engineering, Tongji University, 4800 Caoan Highway, Shanghai, China)

  • Ruo-Fan Qiu

    (School of Mechanical Engineering, Tongji University, 4800 Caoan Highway, Shanghai, China)

  • Tao Jiang

    (School of Mechanical Engineering, Tongji University, 4800 Caoan Highway, Shanghai, China)

Abstract

The pseudopotential lattice Boltzmann model has been widely used to solve multi-phase and multi-component flow problems. However, original pseudopotential model cannot be used in simulating diffusion flow with large pressure difference because of its limitation. In this paper, we incorporate pseudopotential model with a new form of effective mass to solve this problem based on the relationship between pressure difference and effective mass. The improved model is verified through Laplace’s law and binary immiscible Poiseuille flow. By simulating pipeline binary diffusion flow and two-inlet binary cavity jet flow, we show that the improved model can achieve larger pressure difference than pseudopotential model with traditional effective mass forms.

Suggested Citation

  • Fu-Min Liu & An-Lin Wang & Ruo-Fan Qiu & Tao Jiang, 2016. "Improved lattice Boltzmann model for multi-component diffusion flow with large pressure difference," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 27(11), pages 1-17, November.
    • Handle: RePEc:wsi:ijmpcx:v:27:y:2016:i:11:n:s0129183116501308
    DOI: 10.1142/S0129183116501308
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