On equations of state in pseudo-potential multiphase lattice Boltzmann model with large density ratio
On equations of state in pseudo-potential multiphase lattice Boltzmann model with large density ratio
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DOI：
10.1016/j.ijheatmasstransfer.2013.08.005
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发表时间：
2013-12
影响因子：
5.2
通讯作者：
A. Hu;Longjian Li;Sixu Chen;Q. Liao;Jianbang Zeng
中科院分区：
文献类型：
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作者：
A. Hu;Longjian Li;Sixu Chen;Q. Liao;Jianbang Zeng
本文通过修改相应的状态方程来分析单分量赝势模型。仿真结果表明，采用修正后的vdW方程，该模型能够比现有的其他多相模型模拟更大密度比范围的多相流，并且避免了赝势模型寄生电流大等缺点。此外，还研究了改进方法对表面张力的影响。此外，还采用了另外两个典型的状态方程，仿真结果表明，它们在任何特征温度下都能很好地工作，最大密度比可达109。
In this paper, a single-component pseudo-potential model is analyzed by modifying corresponding equation of state. Simulation results show that with the modified vdW equation, this model is capable to simulate the multiphase flow with greater range of density ratio than other existing multiphase models and some drawbacks of pseudo-potential model such as large spurious currents are avoided as well. Besides, the influences of the modified method on surface tension are studied. Also, two other typical equations of state are employed, and the simulation results show that both of them work very well under any characteristic temperature and the greatest density ratio could be up to 109.