Numerical analysis of aerodynamic characteristics of high-speed train with different train nose lengths
作者: Jiqiang NiuYueming WangLei ZhangYanping Yuan
作者单位: 1School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
2Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha 410075, Hunan, China
刊名: International Journal of Heat and Mass Transfer, 2018, Vol.127 , pp.188-199
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijheatmasstransfer.2018.08.041
关键词: High-speed trainTrain nose lengthAerodynamic performanceFlow structureBoundary layer
英文摘要: Abstract(#br)In this study, based on the SST κ-ω turbulent model, the IDDES method is used to simulate the unsteady aerodynamic performance of trains with respect to different lengths of the tapered nose of the train (8 m and 12 m). The numerical simulation used in this study is verified through wind tunnel tests. The effects of the length of the tapered nose of the train on the aerodynamic performance, such as the train forces, boundary layer, velocity distribution, pressure distribution, and flow structure around the train, are elucidated via comparing and analyzing the obtained results. The results indicate that the effect of the length of the tapered nose of the train on the drag force of the tail car and lift force of the head car is stronger than the effect on other cars, and the C...
全文获取路径: Elsevier  (合作)

  • aerodynamic 气体动力的
  • speed 速率
  • train 
  • analysis 分析
  • performance 性能
  • different 不相同的
  • length 距离
  • layer 
  • structure 构造