综掘工作面旋流气幕抽吸控尘流场的数值模拟-IngentaConnect.PDFVIP

摇 第36卷第8期 煤摇 摇 炭摇 摇 学摇 摇 报 Vol.36摇 No.8摇 摇 2011年 8月 JOURNAL OF CHINA COAL SOCIETY Aug.摇 2011摇 摇 摇 文章编号:0253-9993(2011)08-1342-07 综掘工作面旋流气幕抽吸控尘流场的数值模拟 程卫民,聂摇 文,姚玉静,周摇 刚,于岩斌,杨俊磊 (山东科技大学 矿山灾害预防控制重点实验室,山东 青岛摇 266510) 摘摇 要:针对配有附壁风筒综掘工作面旋流气幕抽吸控尘流场的特点,分别采用k-着和k-着-专-kp 数学模型建立了该流场单相风流流动和气体-粉尘颗粒两相流动的数学模型,基于同位网格的 SIMPLE算法,利用Fluent软件对该流场风流及粉尘的扩散进行了数值模拟。 模拟结果显示,综掘 工作面旋流气幕抽吸控尘系统可在掘进机司机的前方形成基本封闭整个巷道断面的旋流气幕,能 有效地将粉尘封闭在掘进头至掘进机司机前方0郾5 m 的空间内,防止粉尘向其它区域扩散。 依据 模拟结果和工作面现场的实际条件,设计了由附壁风筒和抽尘净化装置构成的综掘工作面旋流气 幕抽吸控尘系统,该系统在综掘工作面应用后,有效地降低了工作面现场各作业地点的粉尘浓度, 取得了较好的降尘效果。 关键词:综掘工作面;旋流气幕;抽吸控尘;k-着-专-k 数学模型;风流;粉尘 p 中图分类号:TD714郾4摇 摇 摇 文献标志码:A Numerical simulation on the flow field of swirling flow air curtain aspiration control dust in fully mechanized workface CHENG Wei鄄min,NIE Wen,YAO Yu鄄jing,ZHOU Gang,YU Yan鄄bin,YANGJun鄄lei (Key Lab of Mine Disaster Prevention and Control,Shandong University of Science and Technology,Qingdao摇 266510,China) Abstract:According to the characteristics of the flow field of swirling flow air curtain aspiration control dust in fully mechanized workface withpanewall offan drum,k-着 andk-着-专-k wereusedrespectively,andmathematical model p of single鄄phaseairflow andtwo鄄phaseflow of air鄄dustparticlewereestablished.Theairflow anddustdiffusionnumer鄄 ical simulation was performed based on collocated grid SIMPLE algorithms,using of Fluent software.The result shows that the swirl flow air curtain which closed whole road section basically in front driver of roadheader isformed by the system of flow field of swirling flow air curtain aspi