Numerical simulation of dispersed flows and evaluation of interfacial area and volume fraction

Dispersed flows are numerically simulated using the lattice BGK method. The boundary condition for the lattice BGK method is proposed to simulate steady-state flow fields. The time variation and the spatial distribution of the interfacial area and the volume fraction are evaluated. It is shown that the dispersed phase is distributed similarly in time and space in the flow field. The interfacial area obtained by the numerical simulation is compared with that given by empirical correlations, and it is found that the dependency of the interfacial area on the volume fraction is reasonably simulated.