Modeling soot filter regeneration process through surface-reactive flow in porous media using iterative lattice Boltzmann method

In this research, we utilized the Lattice Boltzmann Method (LBM) to model surface chemical reactions and the heat transfer occurring between gas and solid materials within porous media. Our comprehensive approach involved a detailed analysis of fluid flow dynamics, heat transfer mechanisms, and the complex behavior of reactive species. To ensure precise modeling, we employed the thermal counter-slip method to represent heat transfer and carefully chose the wet node scheme to manage surface chemical reactions and species transfer. We placed significant emphasis on methodically explaining our selected models and providing practical guidelines for their implementation, as well as establishing initial and boundary conditions. An essential part of our study was investigating the influence of specific physical parameters governing these processes, including the Péclet, Damköhler, and Prandtl numbers. Consequently, we successfully identified various combustion regimes and elucidated the roles played by chemical reaction rates, diffusion, and convection processes within each of these regimes. •LBM model to numerically model surface reaction & gas–solid heat transfer in porous media.•Coupled analysis to investigate behavior of solid surface combustion, identify various combustion regimes.•Utilizes thermal counter-slip method to model conjugate heat transfer & wet node scheme for surface reactions.•Examines the impact of physical parameters on the coupled processes.•Provides a comprehensive understanding of the role of reaction rate, diffusion & convection transport processes.