• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (4): 177-184.doi: 10.3901/JME.2020.04.177

• 运载工程 • 上一篇    下一篇

扫码分享

高速受电弓开闭口运行气动特性及对比研究

李田, 秦登, 邹栋, 张继业, 张卫华   

  1. 西南交通大学牵引动力国家重点实验室 成都 610031
  • 收稿日期:2019-03-04 修回日期:2019-10-20 出版日期:2020-02-20 发布日期:2020-04-23
  • 作者简介:李田,男,1984年出生,博士,副研究员,硕士研究生导师。主要研究方向为列车空气动力学,流动控制与应用。E-mail:litian2008@home.swjtu.edu.cn;秦登,男,1996年出生,硕士研究生。主要研究方向为列车空气动力学。E-mail:1213845116@qq.com;邹栋,男,1985年出生,博士,助理研究员。主要研究方向为受电弓动力学。E-mail:zdong_hn@163.com;张继业,男,1965年出生,博士,教授,博士研究生导师。主要研究方向为列车空气动力学,稳定性理论与应用。E-mail:jyzhang@home.swjtu.edu.cn;张卫华,男,1961年出生,博士,教授,博士研究生导师,国家杰出青年科学基金获得者,国务院"政府津贴"获得者,国家973计划项目首席科学家。主要研究方向为高速列车耦合大系统动力学。E-mail:tpl@home.swjtu.edu.cn
  • 基金资助:
    国家自然科学基金(51605397)、四川省科技计划(2019YJ0227)和牵引动力国家重点实验室自主课题(2019TPL_T02)资助项目。

Study on Aerodynamic Characteristics and Comparisons of High-speed Pantograph in Knuckle-downstream or Knuckle-upstream Direction

LI Tian, QIN Deng, ZOU Dong, ZHANG Jiye, ZHANG Weihua   

  1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031
  • Received:2019-03-04 Revised:2019-10-20 Online:2020-02-20 Published:2020-04-23

摘要: 受电弓的气动性能严重影响其受流质量,是高速列车安全运行的关键要素之一。基于计算流体动力学理论,建立高速受电弓空气动力学模型,对比分析了高速受电弓在开口和闭口两种运行状态下的流场结构和气动力特性。数值模拟得到的受电弓气动阻力与风洞试验误差为4.07%,弓头气动升力的误差为7.95%。研究结果表明:在研究的速度等级范围内,高速受电弓开口运行气动阻力比闭口运行大2.24%~3.33%,弓头升力较闭口运行大5.45%~7.98%;不同开闭口运行状态对弓头滑板升力的影响较小。在同一开闭状态下,当高速受电弓运行速度大于等于400 km/h时,气体压缩效应对受电弓气动阻力的影响较大,且随速度的增加而增大,然而,气体压缩性对弓头气动升力的影响较小。

关键词: 高速受电弓, 气动特性, 开闭口状态, 列车空气动力学, 压缩效应

Abstract: The aerodynamic performance of the pantograph seriously affects pantograph-catenary current collection quality and is one of the key factors for the running safety of high-speed trains. Based on the computational fluid dynamics, a high-speed pantograph aerodynamic model is established. The flow field around and aerodynamic characteristics of the high-speed pantograph in both knuckle-downstream and knuckle-upstream direction are compared and analyzed. The error in the aerodynamic drag of the pantograph between numerical simulation and wind tunnel test is 4.07%, and that of the aerodynamic lift of the panhead is 7.95%. Results show that the aerodynamic drag of the high-speed pantograph in the knuckle-downstream direction is larger by 2.24%-3.33% than that in the knuckle-upstream direction, and the panhead lifting force is larger by 5.45%-7.98%. The impact of running state on the lift force of the panhead strip is small. In the knuckle-downstream or knuckle-upstream direction, when the high speed pantograph running speed is no less than 400 km/h, the air compression effect has a greater influence on the aerodynamic drag of the pantograph, and increases with the increase of the speed. However, air compressibility has less effect on the aerodynamic lift force of the panhead.

Key words: high-speed pantograph, aerodynamic characteristics, knuckle-downstream and knuckle-upstream, train aerodynamics, compression effect

中图分类号: