A pseudopotential-based multiple-relaxation-time lattice Boltzmann model for multicomponent/multiphase flows

In this paper, a pseudopotential-based multiplerelaxation-time lattice Boltzmann model is proposed for multicomponent/multiphase flow systems. Unlike previous models in the literature, the present model not only enables the study of multicomponent flows with different molecular weights, different vi...

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Bibliographic Details
Published in:Acta mechanica Sinica 2012-08, Vol.28 (4), p.983-992
Main Authors: Chai, Zhen-Hua, Zhao, Tian-Shou
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Computational Intelligence
Distribution functions
Engineering
Engineering Fluid Dynamics
Interpolation
Lattices
Mathematical models
Molecular weight
Multiphase flow
Research Paper
Schmidt number
Theoretical and Applied Mechanics
Viscosity
分布函数
基础
多相流
多组分相
松弛时间
格子Boltzmann模型
流体动力学方程
赝势
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Summary:In this paper, a pseudopotential-based multiplerelaxation-time lattice Boltzmann model is proposed for multicomponent/multiphase flow systems. Unlike previous models in the literature, the present model not only enables the study of multicomponent flows with different molecular weights, different viscosities and different Schmidt numbers, but also ensures that the distribution function of each component evolves on the same square lattice without invoking ad- ditional interpolations. Furthermore, the Chapman-Enskog analysis shows that the present model results in the correct hydrodynamic equations, and satisfies the indifferentiability principle. The numerical validation exercises further demonstrate that the favorable performance of the present model.
ISSN:0567-7718
1614-3116
DOI:10.1007/s10409-012-0123-6