NUMERICAL ANALYSIS OF TRAIN-INDUCED AIRFLOW AND PERFORMANCE EVALUATION OF VENT SHAFTS IN SUBWAY SYSTEM

摘要：

To investigate the characteristics of train-induced airflow and evaluate the ventilation performance depending on the number and location of vent shafts connected to the station area, a three-dimensional numerical analysis of subway natural ventilation system is carried out. The geometry model and trainrun schedule employed are exactly the same as a real subway station in Shanghai. The dynamic mesh method is used for the moving boundary of the train. A parameter, net exhaust air volume, is defined to evaluate the ventilation performance. It is found that the ventilation system with two vent shafts in the station have a better performance than that with only one shaft and the location of the shaft in the train-leaving side of the station performs better than in the train-coming side. The results can be used to optimize the design of subway stations under construction.

关键词： Subway station vent shaft ventilation performance dynamic mesh method numerical analysis

作者: Y.Wu N.P.Gao L.H.Wang X.P.Wu T.Zhu

作者单位: College of Mechanical Engineering, Tongji University,Shanghai, China Shanghai of University for Science and Technology,Shanghai, China

会议类型: 国际会议

会议名称: 2012 International Conference on System Simulation(2012年国际系统仿真学术会议)

会议地点: 上海

会议语种:英文

页码: 283-288

在线出版日期: 2012-04-06（万方平台首次上网日期，不代表论文的发表时间）