Sediment Transport Mechanics
An Eulerian two-phase flow model, SedFoam is combined with a volume-of-fluid solver, interFoam/waves2Foam in the OpenFOAM framework. The fully coupled model, SedWaveFoam, treats the air and water phases as two immiscible fluids with the interface evolution resolved, and the sediment particles as dispersed phase. The full profiles of flow and sediment transport driven by surface waves are calculated using Reynolds-averaged Eulerian two-phase flow equations with closures of inter-granular stresses and a k-ε turbulence model. In this study, SedWaveFoam was applied to sandBAR SEDiment transport experiment to investigate the effect of wave-induced bed shear stress, boundary layer streaming, and wave-breaking-induced turbulence.