不同喷雾压力下雾化场气液两相流数值仿真

发布时间：2018-05-24 19:00

本文选题：喷雾降尘 + 气液两相流　；参考：《煤矿安全》2017年03期

【摘要】：为解决煤矿喷雾降尘效率低和喷雾用水量大易造成巷道水害问题,依据气液两相流理论,应用Fluent软件对雾滴在不同喷嘴压力作用下粒径分布和运移规律进行数值模拟,得到雾粒浓度和粒径分布情况。研究表明:喷雾压力影响雾粒的分布范围。压力过大,雾粒在巷道内的分布面积逐渐减小。同一喷嘴压力下雾粒粒径分布不均匀,在横截面上呈现中间粒径小,两边粒径大的规律。当喷雾压力为3 MPa时,雾粒的分布利于降尘且距喷嘴2.8 m处雾化效果最好。
[Abstract]:In order to solve the problem of tunnel water hazard caused by low efficiency of spray dust control and large amount of spray water consumption, according to the theory of gas-liquid two-phase flow, the particle size distribution and migration law of droplets under different nozzle pressure were numerically simulated by Fluent software. The particle concentration and particle size distribution were obtained. The results show that spray pressure affects the distribution of aerosol particles. If the pressure is too large, the distribution area of fog particles in the roadway decreases gradually. Under the same nozzle pressure, the particle size distribution is not uniform, and the middle particle size is small and the size of both sides is large in the cross section. When the spray pressure is 3 MPa, the distribution of aerosol particles is favorable to dedusting and the atomization effect is the best at 2.8m from the nozzle.
【作者单位】：中北大学机械与动力工程学院;中北大学先进制造技术山西省重点实验室;
【基金】：国家自然科学基金资助项目(U1261107) 先进制造技术山西省重点实验室开放基金资助项目(XGZZ201601-06)
【分类号】：TD714.4

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