| 快速集装箱平车在明线和隧道内会车时的气动性能 |
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| 引用本文： | 李志伟,梁习锋,周丹.快速集装箱平车在明线和隧道内会车时的气动性能[J].中南大学学报(自然科学版),2008,39(5). |
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| 作者姓名： | 李志伟 梁习锋 周丹 |
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| 作者单位： | 中南大学,轨道交通安全教育部重点实验室,湖南,长沙,410075 |
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| 摘 要： | 利用三维、可压、非定常N-S方程,采用滑移网格技术对我国正在研制的160 km/h快速集装箱专用平车与动车组分别在明线和隧道内会车时的气动性能进行数值模拟.研究结果表明:集装箱平车以160 km/h的速度与动车组等速交会时,在隧道内会车时车载集装箱中部压力变化幅值是在明线会车时的3.46倍;在明线和隧道内会车时,集装箱列车受到的侧向力和侧滚力矩均与交会列车运行速度近似成平方关系;因隧道内压力分布一维特性较强,集装箱平车交会侧与非交会侧压力相差并不大,因此,在明线会车时集装箱平车受到的侧向力和侧滚力矩均比隧道会车时的大,大约是其1.1倍.
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| 关 键 词： | 集装箱专用平车 隧道 列车交会 数值计算 |
Aerodynamic performance for container flat wagon passing in open air and in tunnel |
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| LI Zhi-wei,LIANG Xi-feng,ZHOU Dan.Aerodynamic performance for container flat wagon passing in open air and in tunnel[J].Journal of Central South University:Science and Technology,2008,39(5). |
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| Authors: | LI Zhi-wei LIANG Xi-feng ZHOU Dan |
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| Institution: | LI Zhi-wei,LIANG Xi-feng,ZHOU Dan(Key Laboratory for Track Traffic Safety of Ministry of Education,Central South University,Changsha 410075,China) |
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| Abstract: | Based on unsteady N-S equation of three dimensional and compressible viscous fluid,the aerodynamic performance for the fast special container flat wagon at the speed of 160 km/h was calculated numerically by adopting the technology named slippage grid.The results show that the air crossing pressure pulse magnitude of the container generated in the tunnel is 3.46 times that generated in open air when container flat wagon at the speed of 160 km/h passed by EMU moving at the same speed.Both the lateral force a... |
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| Keywords: | special container flat wagon tunnel trains crossing numerical simulation |
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