  Shan-Chen model is a numerical scheme to simulate multiphase fluid flows
using Lattice Boltzmann approach. The original Shan-Chen model suffers from
inability to accurately predict behavior of air bubbles interacting in a
non-aqueous fluid. In the present study, we extended the Shan-Chen model to
take the effect of the attraction-repulsion barriers among bubbles in to
account. The proposed model corrects the interaction and coalescence criterion
of the original Shan-Chen scheme in order to have a more accurate simulation of
bubbles morphology in a metal foam. The model is based on forming a thin film
(narrow channel) between merging bubbles during growth. Rupturing of the film
occurs when an oscillation in velocity and pressure arises inside the channel
followed by merging of the bubbles. Comparing numerical results obtained from
proposed model with mettallorgraphy images for aluminum A356 demonstrated a
good consistency in mean bubble size and bubbles distribution
