This study adopts the CFD–DEM–WEAR method to study the pneumatic conveying mechanism of wet particles with different sphericity in a vertical–elbow–horizontal pipeline in order to explore the effects of different particle moisture content, sphericity, and inlet air velocity on the pneumatic conveying efficiency and flow characteristics of wet particles in pipelines. Through the study of flow pattern, particle velocity, pressure drop, particle distribution, and wear, the operating mechanism of pneumatic conveying of wet particles under different conditions is analyzed at macro and micro levels. The results show that as the moisture content increases, the transport speed of wet particles in the pipeline gradually slows down, and the wear depth of the elbow gradually increases; while as the sphericity increases, the speed change of wet particles in the elbow part of the pipeline gradually decreases, and the wear depth of the elbow gradually decreases.

中文翻译：

---

管道弯头中非球形湿颗粒气力输送的数值研究


本研究采用 CFD-DEM-WEAR 方法研究不同球度湿颗粒在纵-弯头-水平管道中的气力输送机理，以探究不同颗粒含水率、球度和进气速度对管道中湿颗粒气力输送效率和流动特性的影响。通过对流型、颗粒速度、压降、颗粒分布和磨损的研究，从宏观和微观层面分析了不同条件下湿颗粒气力输送的运行机理。结果表明：随着含水率的增加，湿颗粒在管道中的输送速度逐渐减慢，弯头的磨损深度逐渐增加;而随着球度的增加，管道弯头部分湿颗粒的速度变化逐渐减小，弯头的磨损深度逐渐减小。