Lattice Boltzmann simulation of nonideal fluids.
Lattice Boltzmann simulation of nonideal fluids.
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DOI：
10.1103/physrevlett.75.830
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发表时间：
1995-02
影响因子：
8.6
通讯作者：
M. Swift;W. R. Osborn;J. Yeomans
中科院分区：
文献类型：
--
作者：
M. Swift;W. R. Osborn;J. Yeomans
描述了一种能够模拟相分离和两相流动的格子Boltzmann格式。通过在碰撞算符中直接引入非理想压强张量，确保了热力学一致性。我们还展示了如何使用外部化学势来补充标准边界条件，以研究润湿对相分离和受限几何中流体流动的影响。这种方法还有一个额外的优势，那就是减少了许多以前的格子Boltzmann方法常见的非物理离散化问题。
A lattice Boltzmann scheme able to model the hydrodynamics of phase separation and two-phase flow is described. Thermodynamic consistency is ensured by introducing a non-ideal pressure tensor directly into the collision operator. We also show how an external chemical potential can be used to supplement standard boundary conditions in order to investigate the effect of wetting on phase separation and fluid flow in confined geometries. The approach has the additional advantage of reducing many of the unphysical discretisation problems common to previous lattice Boltzmann methods.