变温场诱导相分离的格子Boltzmann数值模拟

Lattice Boltzmann Numerical Simulation of Phase Separation Induced by Variable Temperature Field

相分离是环境条件发生变化导致原来混合流体分离出两相或多相的不稳定倾向和过程,是多相流研究的核心内容之一。本文采用自由能格子Boltzmann模型,将流体黏度与温度变化过程耦合,研究二元混合流体在温度变化条件下的相分离行为。

Phase separation is an unstable tendency and process of separating two or more phases from the original mixed fluids due to the change in environmental conditions. It is one of the core contents in the study of multiphase fluids. In this paper, the phase separation behavior of binary fluids under the change of temperature is studied by the free-energy lattice Boltzmann model coupling the fluid viscosity and temperature.