Particle-assisted displacement in porous media has attracted growing attention in the context of enhanced oil recovery and environmental remediation. However, the complex interplay between particle accumulation, interfacial dynamics, and flow diversion remains insufficiently understood. In this study, we employ a fully resolved diffuse-interface lattice Boltzmann method to investigate the effects of suspended particles on immiscible multiphase displacement at the pore scale. The simulations systematically explore the influence of particle size, wettability, and pore geometry on displacement patterns, residual phase distribution, and overall recovery efficiency. The findings are expected to provide new insights into the role of suspended particles in multiphase flow and contribute to the development of predictive models for particle-laden flow control in porous media.

lattice Boltzmann method,multiphase flow transport,particle,porous media