Abstract
Adhesive and cohesive particle-laden turbulent flows play a crucial role in numerous natural and industrial processes. Herein, a fully-resolved LBM-LES-DEM numerical scheme is developed for a better understanding of these flows in three dimensions. This numerical scheme is four-way coupling, where the adhesive and cohesive forces, such as van der Waals force, capillary force and viscous force, are embedded into DEM to simulate adhesive and cohesive particle-particle interactions, and the MRT-D3Q19 LBM is combined with LES based on the Smagorinsky model to simulate turbulent fluid flows, and the fluid-particle interactions are solved by momentum exchange method. Several benchmarks, such as 3D duct flow, single particle settling, and DKT processes, are validated, and the dynamics of particle pair in turbulent structures are further discussed. All the results indicate that this numerical scheme provides a promising method for the simulation of adhesive and cohesive particle-laden turbulent flows.
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