Abstract
We present our recent progress on mesoscopic modeling of multiphysicochemical transport phenomena in porous media based on the lattice Boltzmann method. Simulation examples include injection of CO2-saturated brine into a limestone rock, two-phase behavior and flooding phenomena in polymer electrolyte fuel cells, and electroosmosis in homogeneously charged porous media. It is shown that the lattice Boltzmann method can account for multiple, coupled physicochemical processes in these systems and can shed some light on the underlying physics occurring at the fundamental scale. Therefore, it can be a potential powerful numerical tool to analyze multiphysicochemical processes in various energy, earth, and environmental systems.
Highlights
Multiphysicochemical transport phenomena in porous media are ubiquitous, in various energy, earth, and environment systems
We review our recent work on mesoscopic modeling of multiphysicochemical processes in porous media, based on the lattice Boltzmann method (LBM), a relatively new numerical method for simulating fluid flows and modeling physics in fluids [11]
We have presented our recent work on mesoscopic modeling of multiphysicochemical processes in porous media, based on the LBM
Summary
Multiphysicochemical transport phenomena in porous media are ubiquitous, in various energy, earth, and environment systems. There are multiple physics processes involved, including hydrodynamics, thermodynamics, chemical dynamics, and electrodynamics (because the surface of most natural media is charged) All these processes are governed by pore-scale interfacial phenomena, which occur at scales of microns. Several macroscopic computational models for multiple-physicochemical transport processes in PEFCs [4,5,6,7,8,9,10] have been developed These macroscopic models again are based on the theory of volume averaging and treat the catalyst layer and gas diffusion layer as macrohomogeneous porous layers. We review our recent work on mesoscopic modeling of multiphysicochemical processes in porous media, based on the lattice Boltzmann method (LBM), a relatively new numerical method for simulating fluid flows and modeling physics in fluids [11].
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