列车运行速度对安全门地铁站台热环境的影响研究
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摘要
为了分析夏热冬冷地区空调季时,不同列车牵引速度对安全门车站热环境的影响,本文以南京下马坊地铁站作为典型研究,建立车站活塞风CFD模型。对60 km/h,70 km/h,80 km/h,90 km/h和100 km/h不同列车牵引过程进行模拟分析,得到车站及附近区间隧道流场和温度场的变化规律,并计算出不同工况下的掺混系数及其对站台活塞风的掺混效果。结果表明,随着列车最高运行时速的增大,活塞风作用时间变短,进入车站的活塞风量变大。掺混系数值依次为0.166,0.175,0.185,0.200和0.218。在列车发车后20 s至50 s内,车站人员头部区域空气温度升高,升温速率加快,空气流速增快,人员热不舒适感增强。
To analyze the influence of the traction speed on the thermal environment of metro station with safety gate,this paper took Xia ma-fang subway station in Nanjing as the typical,and established the CFD model of station piston.The flow trajectories of 60 km/h,70 km/h,80 km/h,90 km/h and 100 km/h trains were simulated and analyzed,so that the flow and temperature field of the station and nearby tunnel were obtained,as well as the mixing coefficient and its effect of the platform piston wind.The results show as follows.First,that with the entry of the piston wind,the thermal environment of the platform is seriously affected.Second,With the increase of the maximum speed of the train,the piston wind's working time becomes shorter,the piston air volume entering the station becomes larger.Then the mixing effect is enhanced,the station air temperature rises,the heating rate is accelerated,and the heat dissatisfaction becomes more and more obvious.Therefore,to reduce the staff's heat discomfort,metro train traction speed should be as low as possible in the air conditioning season in the premise of ensuring traffic amount for hot summer and cold winter areas.
To analyze the influence of the traction speed on the thermal environment of metro station with safety gate,this paper took Xia ma-fang subway station in Nanjing as the typical,and established the CFD model of station piston.The flow trajectories of 60 km/h,70 km/h,80 km/h,90 km/h and 100 km/h trains were simulated and analyzed,so that the flow and temperature field of the station and nearby tunnel were obtained,as well as the mixing coefficient and its effect of the platform piston wind.The results show as follows.First,that with the entry of the piston wind,the thermal environment of the platform is seriously affected.Second,With the increase of the maximum speed of the train,the piston wind's working time becomes shorter,the piston air volume entering the station becomes larger.Then the mixing effect is enhanced,the station air temperature rises,the heating rate is accelerated,and the heat dissatisfaction becomes more and more obvious.Therefore,to reduce the staff's heat discomfort,metro train traction speed should be as low as possible in the air conditioning season in the premise of ensuring traffic amount for hot summer and cold winter areas.
引文
[1]蔡虎.城轨列车速度曲线影响因素分析及其节能优化[D].北京:北京交通大学,2016.
[2]李炎.铁路隧道列车活塞风特性分析及理论研究[D].兰州:兰州交通大学,2010.
[3]张君瑛.地铁列车运行内热源作用的区间热环境分析[J].地下空间与工程学报,2010,6(6):1312-1323.
[4]杨晖,贾力,黄培雷.列车运动对地铁站台环境影响的数值模拟[J].地下空间与工程学报,2010,6(2):270-275.
[5]邓伟,李晓峰,朱颖心.地铁活塞风掺混系数模拟研究[C]//全国暖通空调制冷2004年学术文集.2004.
[6]Fernando E Camelli,Greg Byrne,Rainald Lohner.Modeling subway air flow using CFD[J].Tunnelling and Underground Space Technology,2014,43:20-31.
[7]朱培根,孔维同,涂江峰,等.迂回风道对安全门地铁环控能耗的影响[J].解放军理工大学学报(自然科学报),2016,17(5):493-498.
[8]中华人民共和国铁道部.列车牵引计算规程[M].北京:中国铁道出版社,1999.
[9]金学易.陈文英隧道通风与隧道空气动力学[M].北京:中国铁道出版社,1983.
[2]李炎.铁路隧道列车活塞风特性分析及理论研究[D].兰州:兰州交通大学,2010.
[3]张君瑛.地铁列车运行内热源作用的区间热环境分析[J].地下空间与工程学报,2010,6(6):1312-1323.
[4]杨晖,贾力,黄培雷.列车运动对地铁站台环境影响的数值模拟[J].地下空间与工程学报,2010,6(2):270-275.
[5]邓伟,李晓峰,朱颖心.地铁活塞风掺混系数模拟研究[C]//全国暖通空调制冷2004年学术文集.2004.
[6]Fernando E Camelli,Greg Byrne,Rainald Lohner.Modeling subway air flow using CFD[J].Tunnelling and Underground Space Technology,2014,43:20-31.
[7]朱培根,孔维同,涂江峰,等.迂回风道对安全门地铁环控能耗的影响[J].解放军理工大学学报(自然科学报),2016,17(5):493-498.
[8]中华人民共和国铁道部.列车牵引计算规程[M].北京:中国铁道出版社,1999.
[9]金学易.陈文英隧道通风与隧道空气动力学[M].北京:中国铁道出版社,1983.