A CFD–FEM Coupled Approach for Particle–Fluid Flows

Dense particle–fluid flows are common in industrial and natural systems, but they are difficult to predict because particles can behave differently under different flow conditions. This thesis develops a scalable modelling framework by combining particle-scale information with continuum-scale simulations. A solid-phase pressure model and a unified formulation are developed to describe the behaviour of the granular phase. The framework is validated against benchmark cases and then applied to study cohesion-induced arching in concentric and eccentric silos. Overall, this work provides an efficient and physically based approach for modelling engineering-scale particle–fluid flow problems.