产涡凝聚区流场及颗粒运动轨迹模拟研究

发布时间：2018-05-03 20:10

本文选题：矿尘 + 亚微米细微颗粒物　；参考：《煤矿安全》2017年04期

【摘要】：亚微米细微颗粒物凝聚技术是对亚微米细微粉尘进行阻隔和收集的有效方法。为了对亚微米细微粉尘凝聚装置中含尘气流流场及颗粒运动轨迹进行模拟,应用Fluent软件,采用格子波尔兹曼模型模拟含尘气流流场,采用离散相(discrete phase models,DPM)模型模拟颗粒运动轨迹,对不同速度入口下和不同粒径的颗粒轨迹分布进行了数值模拟和分析。结果表明:凝聚区中的产涡装置可以产生随速度变化的不同尺度的涡;随着颗粒粒径的减小,越易受湍流作用的影响,碰撞几率越大。
[Abstract]:Submicron fine particles condensation technology is an effective method to block and collect submicron fine particles. In order to simulate the dust flow field and particle motion trajectory in submicron fine dust condensate device, the lattice Boltzmann model was used to simulate the dust flow field and the discrete phase model was used to simulate the particle motion trajectory by using Fluent software, the lattice Boltzmann model and the discrete phase model were used to simulate the particle motion trajectory. The particle trajectory distribution under different velocity inlet and different particle size is numerically simulated and analyzed. The results show that vortex-producing devices in the condensed region can produce vortices of different scales varying with the velocity, and with the decrease of particle size, the higher the impact probability is, the easier the particle size is to be affected by turbulence.
【作者单位】：中国矿业大学(北京)资源与安全工程学院;华北科技学院河北省矿井灾害防治重点实验室;山西汾西矿业(集团)有限责任公司高阳煤矿;
【基金】：河北省矿井灾害防治重点实验室开放基金资助项目(KJZH2016K03)
【分类号】：TD714.2

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