SINGLE COMPONENT MULTIPHASE DISPLACEMENT WITH LATTICE BOLTZMANN MODELS
单组分多相系统驱替过程的格子Boltzmann模拟

By introducing fluid-fluid and fluid-solid surfaces interactions, the process of the non-wetting vapor phase displacing complete-wetting liquid phase in two-dimensional pore-networks is simulated based on the Shan-Chen single component multiphase model of lattice Boltzmann method. The fluid interfaces form naturally and the displacement is of capillary fingering. With the capillary number increasing, the viscous force becomes more and more dominating and the sizes of the pores invaded by vapor decrease, leading to rich behaviors of the displacement. With the imposition of the gravity, the gravity plays a stabilizing role on the vapor invasion front.