CFD–DEM Simulation of Sand-Retention Mechanisms in Slurry Flow

The primary motivation of this paper is to investigate the sand-retention mechanisms that occur at opening sand filters. Various retention under various conditions are explored have a particulate flow with low concentration particles (called slurry flow) such as particle shape, size, and concentration. computational fluid dynamic (CFD)–discrete element method (DEM) model applied predict steady well-bore. By using coupled CFD–DEM (CFD flow, DEM flow), physics involved in studied. coarse grid unresolved smoothed (refined unresolved) coupling approaches implemented STAR-CCM+ (SIEMENS PLM) used transfer data between solid phases calculate forces. filter slots investigation different geometries: straight, keystone, wire-wrapped screen (WWS) seamed slot considered shapes aspect ratios size distributions. regime laminar all simulations conducted. validated from perspectives particle–fluid, particle–particle, particle–wall interactions. Verification conducted by mesh sensitivity analysis resolution CFD DEM. simulation numerous scenarios, three including surface deposition, exclusion, sequential arching observed. However, too diluted result multiparticle arch formation. In simulations, tested give us an insight into parameters could affect occurrence mechanisms. As example, importance gravity force interaction forces on confirmed microscale comparison others drag force, lift cohesive buoyancy virtual mass force.