In this paper, a robust interfacial lattice Boltzmann flux solver (ILBFS) is presented to
simulate multiphase flows, which is able to deal with large density contrasts. Different from
the conventional finite-volume multiphase flow solvers, which calculate the fluxes at each
cell interface based on macroscopic variables, the present method employs the Chapman–
Enskog analysis to re-construct the convective and diffusive terms of the macroscopic
governing equation, and uses the local equilibrium solutions of the lattice Boltzmann …