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Study of the unsteady aerodynamic performance of an inter-city train passing through a station in a tunnel

机译：穿越隧道车站的城际列车非稳态气动性能研究

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摘要

Based on sliding mesh technology, this paper numerically investigates the aerodynamic performance of an 8-car inter-city train passing through a underground station at full speed. The effects of the gap between the car and the platform screen doors on the aerodynamic performance of the train passing through underground stations are analyzed. The curve of pressure variations at survey points on the train and the tunnel surface obtained from numerical simulation agree with those obtained from the moving model test. The asymmetrical internal structure of the station and the abrupt change in cross-section are the main factors contributing to the poor running stability of the inter-city train, with car 1 and car 8 showing the worst running stability. When the gap between the car and the platform screen doors increases from 130 mm to 425 mm, the maximum side force drops by 52.72% when car 1 passes the platform screen doors, and a linear relationship between the maximum side force and the gap between the car and the platform screen doors is observed.
机译：基于滑动网格技术，本文对8辆城市间列车全速通过地下车站的空气动力学性能进行了数值研究。分析了轿厢与站台屏蔽门之间的间隙对列车通过地下车站的空气动力学性能的影响。通过数值模拟获得的列车和隧道表面上的测量点处的压力变化曲线与通过运动模型测试获得的压力变化曲线一致。车站内部结构的不对称和横截面的突然变化是造成城际列车运行稳定性差的主要因素，其中1号和8号轿厢的运行稳定性最差。当轿厢和站台屏蔽门之间的间隙从130 mm增加到425 mm时，当轿厢1通过站台屏蔽门时，最大侧向力下降52.72％，并且最大侧向力和门之间的间隙之间呈线性关系观察轿厢和月台的屏蔽门。

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  • 作者

    Yuan Hui; Zhou Dan; Meng Shuang;

  • 作者单位

    Cent S Univ, Minist Educ, Key Lab Traff Safety Track, Changsha 410075, Hunan, Peoples R China;

    Cent S Univ, Minist Educ, Key Lab Traff Safety Track, Changsha 410075, Hunan, Peoples R China|Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Hunan, Peoples R China|Natl & Local Joint Engn Res Ctr Safety Technol Ra, Changsha 410075, Hunan, Peoples R China;

    Cent S Univ, Minist Educ, Key Lab Traff Safety Track, Changsha 410075, Hunan, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Inter-city train; Underground station; Tunnel; Aerodynamics;

    机译：城际列车;地铁站;隧道;空气动力学;

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