Lattice Boltzmann model for the simulation of multicomponent mixtures.
Lattice Boltzmann model for the simulation of multicomponent mixtures.
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DOI：
10.1103/physreve.76.046703
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发表时间：
2007-10
期刊：
影响因子：
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通讯作者：
S. Arcidiacono;I. Karlin;I. Karlin;J. Mantzaras;C. Frouzakis
中科院分区：
文献类型：
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作者：
S. Arcidiacono;I. Karlin;I. Karlin;J. Mantzaras;C. Frouzakis
建立了一种模拟实际多组分混合物的晶格玻尔兹曼（LB）模型。在水动力极限下，LB模型在混合平均扩散近似下恢复连续介质力学方程。目前的实现可以用来模拟具有任意施密特数和物种分子质量的现实混合物。将该模型应用于两种不同浓度的相对射流的混合，结果与连续介质模型非常吻合。本文还介绍了该方法在混合流体模拟中的应用。结果与库特流中混合物滑移系数的现有动力学理论预测相比较。
A lattice Boltzmann (LB) model for the simulation of realistic multicomponent mixtures is constructed. In the hydrodynamic limit, the LB model recovers the equations of continuum mechanics within the mixture-averaged diffusion approximation. The present implementation can be used to simulate realistic mixtures with arbitrary Schmidt numbers and molecular masses of the species. The model is applied to the mixing of two opposed jets of different concentrations and the results are in excellent agreement with a continuum model. An application to the simulation of mixtures in microflows is also presented. Results compare well with existing kinetic theory predictions of the slip coefficient for mixtures in a Couette flow.