基于减阻节能的城际列车空气动力学优化  

Aerodynamics Optimization of Intercity Train Based on Drag Reduction and Energy Saving

作　　者：张宝珍 肖端 孟令锋 南喆 唐明赞 Zhang Baozhen;Xiao Duan;Meng Lingfeng;Nan Zhe;Tang Mingzan(CRRC Zhuzhou Locomotive Co.,Ltd.,Zhuzhou,Hunan 412001,China;The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive,Zhuzhou,Hunan 412001,China;Key Laboratory of Traffic Safety on Track,Central South University,Changsha 410075,China)

机构地区：[1]中车株洲电力机车有限公司,湖南株洲412001 [2]重载快捷大功率电力机车全国重点实验室,湖南株洲412001 [3]中南大学轨道交通安全教育部重点实验,长沙410075

出　　处：《机电工程技术》2023年第7期15-18,59,共5页Mechanical & Electrical Engineering Technology

基　　金：国家科技部创新方法工作专项项目(2019IM050100)。

摘　　要：伴随城市轨道交通绿色低碳设计理念的发展,整车气动减阻优化设计成为提升城际列车节能环保的关键方法。采用基于Realizable k-ε的数值计算方法和流体动力学仿真技术,针对某城际列车进行气动阻力分析,并提出了两种气动减阻优化方案,开展气动阻力分布特性对比研究,验证优化方案的减阻节能效果。研究结果表明:列车(车型1)不同构成部分阻力占总阻力的比例关系:车体(80.49%)>转向架(13.97%)>受电弓(5.54%);不同编组位置阻力系数占比关系:头车(26.06%)>尾车(16.66%)>2车(14.93%)>7车(9.89%)>其他中间车(约8%);列车在140~200 km/h范围内,3种车型的阻力系数近似为常数;优化前后3种车型整车阻力系数分别为0.898、0.858和0.807,两种优化方案减阻率分别为4.45%和10.13%,能耗降低率分别4.63%和9.86%。With the development of green and low-carbon design concept of urban rail transit,aerodynamic drag reduction optimization design has become a key method to improve the environmental protection and energy saving of intercity trains.The aerodynamic drag of an intercity train was analyzed using Realizable k-εnumerical calculation method and computational fluid dynamics simulation technology.Two aerodynamic drag reduction optimization schemes were proposed,and the aerodynamic drag distribution characteristics were compared to verify the drag reduction effect.The results show that the proportion of resistance of different components is as follows:car body(80.49%)>bogie(13.97%)>pantograph(5.54%).The comparison of drag coefficients of different marshalling positions:engine car(26.06%)>tail car(16.66%)>No.2 car(14.93%)>No.7 car(9,89%)>other intermediate cars(about 8%).The resistance coefficient of the three models is approximately constant in the range of 140~200 km/h.The drag coefficients of the three models are 0.898,0.858 and 0.807,and the drag reduction rates of the two optimization schemes are 4.45%and 10.13%,and the energy consumption reduction rates are 4.63%and 9.86%respectively.

关 键 词：城际列车 气动阻力 数值模拟 减阻 节能 

分 类 号：TM53[电气工程—电器]