Assessment of lattice boltzmann simulation scheme in predicting two-phase (Solid-Fluid) flow

Abstract

In this paper, the coupled lattice Boltzmann simulation scheme with second Newton’s law is proposed to predict the behavior of a solid particle in lid-driven cavity flow. The lattice Boltzmann scheme alone is first performed to characterize the fluid flow at Reynolds number of 100 and 400. Comparisons with the benchmark results demonstrate the applicability of the method to reproduce complex fluid structure in the system. The same density of buoyant particle is then inserted in the cavity, and its transient orbit at Reynolds number of 130 is plotted. Although the initial trajectories are found slightly deviate from the experimental results due to initial transient error, the general pattern is considered to be in close agreement with those published in the literatures.