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基于一维流动模型的高速列车隧道交会空气阻力数值模拟研究 预览

Numerical Simulation on Air Resistance of High Speed Trains Crossing in Tunnel Based on One-Dimensional Flow Model
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摘要 应用一维可压缩非定常不等熵流动模型和广义黎曼变量特征线法,考虑列车交会诱发的空气压力和流速变化,提出高速列车隧道交会空气阻力的计算方法。研究中国标准动车组CR400AF隧道交会列车空气阻力变化规律,分析列车交会位置、隧道长度、阻塞比、列车运行速度和列车长度对列车空气阻力的影响。结果表明:在研究隧道内列车空气阻力和列车周围气流流动时必须考虑压缩波和膨胀波的传播方向,交会位置对平均列车空气阻力的影响较小;在隧道中央等速交会时,列车空气阻力随隧道长度、阻塞比和车速增大而增大,且这3者的影响程度依次增大;平均列车空气阻力与车速的2次方近似成正比,与阻塞比的0.67~0.75次方成正比,与隧道长度的0.01次方成正比;时速300~400km等级16辆编组高速列车的平均列车空气阻力约为8辆编组的1.65~1.70倍。 Based on one-dimensional compressible unsteady non-homoentropic flow model and the generalized Riemann variable characteristic line method,the calculation method for the air resistance of high speed trains crossing in tunnel was proposed considering the variations of air pressure and flow velocity induced by trains.The variations of the air resistance of two CR400AF,the standard EMUs in China,crossing in the tunnel,were studied.The effects of train crossing position,tunnel length,blockage ratio,running speed and train length on the air resistance of train were analyzed.Results show that the propagation directions of compression wave and the expansion wave must be considered when studying the air resistance of train and the air flow around train in tunnel.The crossing position has little influence on the average air resistance of train.When two trains crossing in the center of tunnel with the same speed,the air resistance of train increases with the increase of tunnel length,blockage ratio,and train speed,and the influence degrees of these three factors increase in order.The average train air resistance is approximately proportional to the second power of train speed,0.67~0.75 power of blocking ratio and 0.01 power of tunnel length.The average air resistance of a 16-car formation high speed train at the speed of 300~400 km·^-1 is about 1.65~1.70 times of an 8 car formation train.
作者 贾永兴 李绵辉 梅元贵 JIA Yongxing;LI Mianhui;MEI Yuangui(Gansu Province Engineering Laboratory of Rail Transit Mechanics Application,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;School of Mechanical Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China)
出处 《中国铁道科学》 EI CAS CSCD 北大核心 2019年第1期70-78,共9页 China Railway Science
基金 中国铁路总公司科技研究开发计划项目(2016T004-F)。
关键词 高速列车 隧道 列车交会 列车空气阻力 一维流动模型 特征线法 High speed train Tunnel Trains crossing Air resistance of train One-dimensional flow model Method of characteristics
作者简介 第一作者:贾永兴(1982—),男,内蒙古乌兰察布人,讲师,博士研究生。E-mail:jiayongxing2004@163.com;通讯作者:梅元贵(1964—),男,河南荥阳人,教授,博士研究生导师,博士。E-mail:meiyuangui@163.com.
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  • 1铁科院西南所通风组.列车在隧道中活塞作用的探讨[J].铁道科学技术,1966,5:28-32. 被引量:2
  • 2Raghu S Raghunathan, H D Kim, T Setoguchi. Aerodynamics of high-speed railway train [ J]. Progress in Aerospace Sciences ,2002 ( 28 ) : 469 - 514. 被引量:1
  • 3Tomoshige HARA. Aerodynamic Drag of Trains in Tunnels [ M ]. Quarterly Report of RTRI, 1967. 被引量:1
  • 4史宪明 万晓燕 吴剑.单列列车在无辅助坑道高速铁路隧道中运行时活寒风的研究.现代隧道技术,2009,:70-74. 被引量:1
  • 5铁科院西南所通风组,铁道科学技术,1966年,5卷,28页 被引量:1
  • 6金学易,隧道通风及隧道空气动力学,1983年,75-76,198-205页 被引量:1
  • 7Raghu S. Raghunathan, H.D. Kim, T. Setoguchi. Aerodynamics of high- speed railway train [ J ]. Progress in Aerospace Seiences. 2002, 38 : 469 -514. 被引量:1
  • 8Tomoshige HARA. Aerodynamic Drag of Trains in Tunnels [ R ]. Quarterly Report of RTRI. 1967, 8 (4) : 229. 被引量:1
  • 9原朝茂.日本铁道技术研究报告608[R].1967. 被引量:1
  • 10中华人民共和国铁道部.列车牵引计算规程,1999. 被引量:1

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