Multi-criteria comparative analysis of the pressure drop on coal gangue fly-ash slurry at different parts along an L-shaped pipeline

Abstract Disposing of coal gangue and fly-ash on the surface is a risky method with tremendous potential catastrophic consequences for environment. Backfill mining promising practice turning those hazardous wastes into functional backfill materials. Unfortunately, how to efficiently deliver slurry desired places remains under-researched. To address this issue, computational fluid dynamics software Fluent was used in current study addition laboratory rheological test simulate impact various parameters evolution pressure at particular section pipeline. Furthermore, response employed investigate components their corresponding influencing weights interact affect drop. This demonstrates that drop highly influenced by concentration, speed, pipe diameter. While conveying speed main component bend section, diameter takes over horizontal vertical sections.