A compact formula for the effective diffusivity of two-dimensional, anisotropic porous media with surface diffusion and interacting phases

摘要

Graphical abstractDisplay OmittedHighlights?A surface-diffusion-based model is derived for diffusion in anisotropic porous media.?Surface- and bulk-diffusion are coupled in fibre arrays with elliptic cross-sections.?The model predicts the permeability based on physical and structural properties.?Good agreement between the analytical model and numerical computations is obtained.?Comparisons with experiments are qualitatively and quantitatively reasonable.AbstractThe effective diffusivity of two-dimensional, ani