地铁车站内流动特性的数值模拟  

Numerical Simulation of Flow Characteristics in Subway Station

作　　者：贾力[1] 黄鹏[1] 杨立新[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《北京交通大学学报》2008年第1期83-87,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家重点基础研究发展计划"973"项目(2005CCA04700)

摘　　要：应用计算流体力学(CFD)方法对地铁列车的进站、出站过程进行了瞬态模拟,得到了不同工况下地铁车站内的气流场分布,分析了列车的运行对车站内流场的影响,并讨论了活塞效应在车站自然通风中的作用.模拟结果表明,列车运行形成的活塞风对车站内的气流组织影响显著,同时也起到了通风换气的作用.站端设置活塞风井能够有效加强车站的自然通风,并降低站内的气流速度.Transient simulation on the process of subway trains pulling in and out of the station was carried out to investigate the flow characteristics in subway station in various situations by utilizing Computational Fluid Dynamics （CFD） method. The influence of the piston effect on the flow field in the station and its role in natural ventilation were discussed, The results indicate that the piston effect has significant influence on the flow field in the station and it plays an important role in natural ventilation, The ventilation shafts established at both ends of the station can effectively enhance natural ventilation while reducing the velocity of airflow in the station.

关 键 词：流体力学 瞬态模拟 地铁车站 活塞效应 流动特性 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]