CFD–DEM Simulation of Particle Trapping in a Horizontal Channel–Cavity Configuration

초록

This study numerically investigates solid particle trapping in a horizontal channel-cavity configuration using a fully coupled CFD-DEM framework that accounts for all fluid-particle interactions. A parametric study was performed to investigate the effects of the Reynolds number () and cavity aspect ratio () on the flow structures and particle trajectories. The results demonstrated that the particle trap ratio decreases monotonically with increasing , whereas the trap ratio first increases and then decreases with and reaches its maximum at = 4. For long cavities ( = 5 and 6), the convected vortical structures grew larger than the cavity height near the trailing wall, causing the nearby particles to escape from the cavity.

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