非理想流体的格子Boltzmann模拟
Lattice Boltzmann Simulation of Non-Ideal Fluids
摘要：
格子玻尔兹曼计划能够模拟相分离和两相流的流体动力学。通过在碰撞算符中直接引入非理想压力张量，保证了热力学的一致性。我们还展示了如何外部化学势可以用来补充标准的边界条件，以调查润湿的影响相分离和流体流动在受限的几何形状。该方法具有额外的优点，减少了许多非物理的离散化问题，共同以前的格子玻尔兹曼方法。
英文摘要：
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.
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