输煤列车进入隧道时的煤粉颗粒分布规律研究  

A study on the distribution law of pulverized coal particles during a coal train entering the tunnel

作　　者：张大鹏 隋子峰 伍永福[1] 骆建军[2] ZHANG Dapeng;SUI Zifeng;WU Yongfu;LUO Jianjun(Energy Sources and Environment School, Inner Mongolia University of Science and Technology, Baotou 014010, China;School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《内蒙古科技大学学报》2021年第4期351-354,共4页Journal of Inner Mongolia University of Science and Technology

基　　金：内蒙古科技大学创新基金资助项目(2019QDL-S07).

摘　　要：以内蒙某隧道为原型,利用计算流体力学方法对输煤列车进入隧道的不同状态进行流场及煤粉颗粒物的运动进行模拟,研究发现列车在进入隧道过程中隧道风会不断减小,但并不影响颗粒质量浓度的增加,颗粒质量高浓度区域基本集中在尾部,煤粉颗粒并不向车厢两侧大规模扩散,而是随着旋流向隧道口移动.With the study of a typical tunnel in Inner Mongolia as prototype,combining the field data,the computational fluid dynamics method was used to establish physical and mathematical calculation model of the flow field and the movement of pulverized coal particles in different state of the coal train entering the tunnel.It is found that the tunnel wind decreases when a coal train enters the tunnel,but it does not affect the increase of particle mass concentration;the high particle mass concentration area is mostly concentrated in the tail of the carriage;the pulverized coal particles do not diffuse to the broadsides of the carriage on a large scale,but move along with the flow towards the entrance of the tunnel.

关 键 词：输煤列车 隧道 煤粉颗粒 分布规律 

分 类 号：TK12[动力工程及工程热物理—工程热物理] TB126[动力工程及工程热物理—热能工程]