• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (18): 142-149.doi: 10.3901/JME.2019.18.142

• 运载工程 • 上一篇    

500 km/h高速列车新头型设计及气动性能研究

李明, 刘楠, 王大海   

  1. 中车唐山机车车辆有限公司技术研究中心 唐山 064000
  • 收稿日期:2018-04-14 修回日期:2019-03-24 发布日期:2020-01-07
  • 作者简介:李明,男,1983年出生,博士,高级工程师。主要研究方向为新能源混合动力有轨电车及空气动力学。E-mail:sjc-liming@tangche.com
  • 基金资助:
    先进轨道交通重点专项资助项目(2016YFB1200504)。

New Head-type Design and Aerodynamic Performance Study of 500 km/h High-speed EMU

LI Ming, LIU Nan, WANG Dahai   

  1. P & T Research Center, CRRC Tangshan Co., Ltd., Tangshan 064000
  • Received:2018-04-14 Revised:2019-03-24 Published:2020-01-07

摘要: 基于人机工程约束条件、气动力、气动噪声等多项指标,完成了时速500 km/h动车组头型多学科综合评估和优化设计,获得了更高速度级下排障器前端伸缩量、鼻尖高度和车窗轮廓等关键外形参数对动车组气动性能的影响规律,其中司机室车窗高度对整车阻力影响最大,排障器前端伸缩量对气动噪声影响最大。优化后整车阻力最大减少6.9%,远场气动噪声平均声压级减小1.6 dBA,达到低阻力低噪声设计目标。同时获得了整车气动阻力、尾车升力、气动噪声、压力波和横风运行性能等受运行速度的影响规律。研究的新头型相对于既有高速列车车头综合性能更佳,相关研究数据可用于支持更高速度级动车组设计。

关键词: 动车组, 新头型, 气动性能, 优化设计, 风洞试验

Abstract: Based on indicators including man-machine engineering, aerodynamic force and aerodynamic noise, comprehensive evaluation and multidisciplinary optimization design of aerodynamic performance for the 500 km/h high-speed electric multiple unit (EMU) head-type is completed. Then the influence law for aerodynamic performance affected by key parameters including expansion amount of control points on the cowcatcher, nose tip height and front window profile is obtained under higher velocity level. Among them, the height of front window influences resistance most, and expansion amount of control points on the cowcatcher influences aerodynamic noise most. After optimization, the total resistance will be reduced 6.9%, and the average pressure level of the aerodynamic noise will be reduced by 1.6 dBA, which meets the design requirements of low resistance and low noise. And influence law of vehicle resistance, tail car lift, aerodynamic noise, pressure wave and transverse wind running performance, etc. are obtained, which are affected by the running speed. The comprehensive performance of new head-type is better than existing EMU head-type, and related research data could provide technical support for higher level speed EMU design.

Key words: electric multiple unit (EMU), new head-type, aerodynamic performance, optimization design, wind tunnel test

中图分类号: