Flow of granular material through a pipe has several industrial applications but maintaining a uniform mass flux is quite challenging. In this work, monodisperse granular flow (non-turbulent and non-dense phase particle transport) through a vertical pipe was simulated using discrete element method (DEM). Effects of different geometric and granular parameters on mass flux of cohesive and non-cohesive solids were analyzed and evaluated. Several important parameters and their effects on mass flux were studied like: L/D ratio, pipe diameter to particle diameter ratio (D/D_p), Poisson ratio, and pipe inclination angle. Furthermore, effects of moisture content and Bond number on mass flux were also investigated. These parameters influenced mass flux except Poisson ratio which showed no significant improvement in mass flux upon increasing the value of this ratio.

粒状材料通过管道的流动具有多种工业应用，但是保持均匀的质量通量是非常具有挑战性的。在这项工作中，使用离散元方法（DEM）模拟了通过垂直管道的单分散颗粒流（非湍流和非致密相颗粒传输）。分析和评估了不同几何和颗粒参数对内聚和非内聚固体质量通量的影响。研究了几个重要参数及其对质量通量的影响：L / D比，管径与粒径比（D / D _p），泊松比和管道倾斜角。此外，还研究了水分含量和键数对质量通量的影响。这些参数影响质量通量，除了泊松比，当增加该比值时，质量通量没有明显改善。