Abstract
A two-phase mixture model solver for simulating sediment plume and moving plate interaction is established based on the OpenFOAM. This solver treats the coupling of fluid and sediment as a mixture term according to each phase's volume fraction (or mass fraction) and incorporates with the RANS, LES, and Hybrid RANS/LES methods for turbulence closure. The arbitrary coupled mesh interface (ACMI) method is utilized to deal with the displacement of the plate over longer distances. The solver is validated against existing experiments (settling of particles cloud and sediment plume\\moving plate interaction) and corresponding Smooth Particle Hydrodynamics (SPH) simulation study. The results show a good agreement with others, and the influence of the mesh resolution and the comparison between CFD results and the SPH results are discussed. Furthermore, the sediment plume/moving plate study is extended to three-dimensional numerical simulations. The Ω method is used for vortex identification. The distribution of sediment concentration, the lift and drag on the moving plate, and the characteristics of vortex structure simulated by different turbulence models are compared and analyzed.
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