Abstract
Numerical calculations of the bed shape formed by particles descending into a water-filled pool have been conducted using the CFD-DEM coupling Eulerian-Lagrangian method, implemented within Fluent code. The mixture model has been employed to simulate the multiphase flows involving water–air fluids. The simulations account not only for the interactions between the fluids and particles but also for collisions, sliding friction and rolling friction between particles (or particles and the wall). The numerical simulations have been performed to investigate the sedimentation shapes for four cases: 4 mm diameter particles (ZrO2 and Stainless Steel) and 6 mm diameter particles (ZrO2 and Al2O3). These particles have been released into a water-filled pool with a diameter of 375 mm. The results indicate that the calculated shapes of the porous bed have been obtained with a reasonable level of accuracy.
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