发表机构
Institute for Multiscale Simulation, Friedrich-Alexander-Universität Erlangen-Nürnberg（埃尔朗根-纽伦堡大学多尺度模拟研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文通过CFD-DEM模拟证明螺旋管道能诱导旋流，均匀化中等气速下气力输送的颗粒分布，减少速度不均，保持输送效率。
AI 中文摘要
在中等气体速度下进行气力输送可能导致强烈的非均匀颗粒输运，其中慢速颗粒在管道底部附近积聚，而较快颗粒则在顶部输送。本文研究螺旋管道作为一种被动手段，在不增加气体速度的情况下均匀化颗粒输运。CFD-DEM模拟表明，螺旋管道诱导气体和颗粒产生旋流运动，持续地在管道横截面上重新分布颗粒。这将直管中观察到的非均匀输运转变为更均匀的状态，并具有更窄的颗粒速度分布。结果表明，螺旋管道可以在中等气体速度下维持高效的气力输送，同时减少过高的颗粒速度。
英文摘要
Pneumatic conveying at moderate gas velocities can result in strongly heterogeneous particle transport, with slow particles accumulating near the bottom of the pipe while faster particles are transported above. Here, we investigate helical pipes as a passive means of homogenizing particle transport without increasing the gas velocity. CFD-DEM simulations show that the helical pipe induces swirling motion of the gas and particles, continuously redistributing particles across the pipe cross-section. This transforms the heterogeneous transport observed in a straight pipe into a more homogeneous state with a narrower particle-velocity distribution. The results demonstrate that helical pipes can maintain efficient pneumatic conveying at moderate gas velocities while reducing excessive particle velocities.
Comments7 pages, 7 figures
