煤矿喷雾降尘雾滴存活时间的数值模拟

发布时间：2018-02-27 09:38

  本文关键词： 安全工程 雾化降尘 雾滴 存活时间 仿真试验 逐步回归　出处：《安全与环境学报》2017年02期 　论文类型：期刊论文

【摘要】：为提高煤矿喷雾除尘效率,揭示雾滴蒸发和存活时间的影响因素,基于差分方法,使用MATLAB软件编制雾滴蒸发过程仿真试验程序,研究了雾滴初始半径、雾滴与风流的初始相对速度、雾滴初始温度,以及巷道风流初始温度、湿度、风压共6个关键影响因素与存活时间的关系;采用逐步回归方法构造了包含5因素的雾滴存活时间计算方程。结果表明:在目前煤矿采用的雾化降尘工艺范围内,除雾滴初始温度外的其他5个因素对雾滴存活时间的影响均较为显著;构建的雾滴存活时间综合计算方程能合理计算雾滴的存活时间。
[Abstract]:In order to improve the efficiency of spray dust removal in coal mine and reveal the influence factors of droplet evaporation and survival time, based on the differential method, the simulation test program of droplet evaporation process was compiled with MATLAB software, and the initial radius of droplet was studied. The relationship between the relative velocity of droplet and wind flow, the initial temperature of droplet, and the initial temperature, humidity and pressure of tunnel air flow, and the relationship between the survival time and the initial relative velocity of droplet and wind flow; The calculation equation of fog droplet survival time with 5 factors was constructed by using stepwise regression method. The results show that: in the range of atomization and dust control technology adopted at present in coal mine, The influence of other five factors on the droplet survival time was significant except the initial temperature of the droplet, and the comprehensive calculation equation of droplet survival time could reasonably calculate the droplet survival time.
【作者单位】： 湖南工学院安全与环境工程学院;辽宁工程技术大学安全科学与工程学院;矿山热动力灾害与防治教育部重点实验室;
【基金】：国家自然科学基金项目(51274116)
【分类号】：TD714.4
，

本文编号：1542132