Simulation of soot particle deposition inside porous walls based on lattice Boltzmann method for diesel particulate filter

The bridge structure inside porous wall is an important feature in diesel particulate filter (DPF) functionality. In this work, the formation process of simulated for first time by domain decomposition-based lattice Boltzmann-cell automation probabilistic model (DDLB-CA model). main goals work are modeling to obtain detailed information and studying effects boundary conditions on process. results show that particle clusters appear narrow channels wall. develops both sides channel based deposited clusters. After structure, number soot particles captured increases significantly. These indicated interception, inertia, diffusion mechanisms play role early stage filtration, but with capture mechanism gradually dominates particles. smaller flow velocity, earlier formed. At same medium particles, fastest. all indicate importance DPF filtration.