产涡凝聚区流场及颗粒运动轨迹模拟研究  

Simulation Study on Flow Field and Particle Trajectory of Vortex Condensation Region

作　　者：张江石[1,2] 朱文[1] 吴龙刚[1] 吕罡罡 马爽[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]华北科技学院河北省矿井灾害防治重点实验室,河北三河065201 [3]山西汾西矿业(集团)有限责任公司高阳煤矿,山西孝义032306

出　　处：《煤矿安全》2017年第4期20-23,共4页Safety in Coal Mines

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)

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。The submicron fine particle agglomeration technique is an effective method of blocking and collecting submicron fine dust. In order to simulate dust flow field and particle trajectories in the submicron fine particle agglomeration device, the software Fluent was applied in this test, Lattice Boltzmann model was used to simulate the dust stream flow field, and discrete phase mod- els were used to simulate particle trajectories, the numerical simulation and analysis was carried out for particle trajectories distri- bution under different inlet velocity and different particle size. The results showed that the vortex generation device in the conden- sation zone could produce different scale vortex with the speed changing; as the particle size decreasing, the particle was more easily affected by turbulence, the collision probability was greater.

关 键 词：矿尘 亚微米细微颗粒物 运动轨迹 离散相 数值模拟 粉尘凝聚 

分 类 号：TD714[矿业工程—矿井通风与安全]