煤矿安全2024，Vol.55Issue(8)：62-71,10.DOI:10.13347/j.cnki.mkaq.20231883
风流速度与喷雾角度对雾滴场分布特征的影响
The influence of airflow velocity and spray angle on distribution characteristics of droplet field
摘要
Abstract
Droplet distribution characteristic is one of the key factors to determine the dust reduction effect of the spray system.In order to study the droplets distribution characteristics under different conditions,the effect mechanism of airflow speed and spray angle on the droplets distribution characteristics was analyzed based on CFD simulation;in addition,the characteristics of droplet distribution after the spray nozzles are arranged near the shearer are also investigated.The results indicate that different airflow speed and spray angle conditions caused an increase in the longitudinal height and transverse length of the spray belt mainly by increasing the transverse momentum of the droplets.With the increase of wind speed,the momentum shielding effect between droplets at differ-ent spatial locations becomes more prominent,which further increases the difference of transverse momentum between droplets and enhances the convergence effect between droplets,resulting in the formation of large-particle droplets around the spray zone.The in-crease of the spray angle mainly changes the distribution ratio of the outlet momentum in the transverse and longitudinal directions,and the momentum of all droplets in the space is more uniform,which has no obvious effect on the spray particle size distribution characteristics.关键词
煤矿粉尘/喷雾降尘/粒径分布/风流扰动/雾滴分布Key words
coal dust/spray dust reduction/particle size distribution/airflow disturbance/spray droplets distribution分类
矿业与冶金引用本文复制引用
莫金明..风流速度与喷雾角度对雾滴场分布特征的影响[J].煤矿安全,2024,55(8):62-71,10.基金项目
重庆市自然科学基金面上资助项目(cstc2021jcyj-msxmX1153) （cstc2021jcyj-msxmX1153）
