Wear Characteristics of Dense Fine Particles Solid-Liquid Two-Phase Fluid Centrifugal Pump with Open Impellers

The demand for a centrifugal pump with open impellers conveying dense fine particles in solid-liquid two-phase flow has increased significantly actual engineering. wear of on the is also exceedingly prominent, which affects engineering efficiency and economic benefits. three-dimensional unsteady; movement high-volume concentration its mutual influence flow, results calculation wear, are very intricate. To study characteristics impeller more accurately, numerical simulation experimental comparison carried out transported by impellers. Considering relationship between walls, we used Fluent 18.0 built-in rebound function model. RNG k-ε model DDPM were adopted simulation, solution was performed under rate (9.6 m3·h−1, 12.8 16 19.2 m3·h−1), different particle sizes (0.048 mm, 0.106 0.15 0.27 0.425 mm), volume concentrations (10%, 15%, 20%, 25%, 30%), respectively. By comparing serious positions impeller, correspond well can be to predict impeller. show that most area blade middle part pressure surface, followed upper blade. greatly affected relevant parameters, such as rate, diameter, concentration. These provide some basis wear-resistant design