• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 29 Issue 4
Jul.  2016
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Article Contents
LUO Jianjun. Aerodynamic Effect Induced by High-Speed Train Entering into Tunnel in High Altitude Area[J]. Journal of Southwest Jiaotong University, 2016, 29(4): 607-614. doi: 10.3969/j.issn.0258-2724.2016.04.002
Citation: LUO Jianjun. Aerodynamic Effect Induced by High-Speed Train Entering into Tunnel in High Altitude Area[J]. Journal of Southwest Jiaotong University, 2016, 29(4): 607-614. doi: 10.3969/j.issn.0258-2724.2016.04.002

Aerodynamic Effect Induced by High-Speed Train Entering into Tunnel in High Altitude Area

doi: 10.3969/j.issn.0258-2724.2016.04.002
  • Received Date: 25 Jan 2015
  • Publish Date: 25 Aug 2016
  • According to high altitude and low temperature climate conditions of midwestern and southwestern dangerous regions of China, a numerical simulation method of three dimensional compressible, viscous and unsteady compression waves induced by a high-speed train entering a tunnel was presented and aerodynamic effect also be studied.The results show that the range of the tunnel altitude has a profound effect on compression waves inside the tunel and micro-pressure waves at the tunnel exit. With the increase of altitude, the decrease of atmospheric pressure will cause a linear decrease of maximum and minimum value of compression waves and micro-pressure waves by 34% and 36% respectively, and has little influence on wave forms at measuring points.Besides, as temperature decreasing, the maximum and minimum value of compression waves and micro-pressure waves decrease linearly by 34% and 36% respectively.According to comparison, it assumes that altitude plays a much larger role in aerodynamic effect outside or inside the tunnel than temperature. At last, according to high altitude climate conditions of China and the principle that aims to make passengers comfortable, it provides that the tunnel area is 96 m2 when the CRH380B train runs at 350 km/h, 75.99 kPa and 250 K. This suggestion provides a guidance for sectional area designing of high-speed railway tunnel in high altitude and low temperature conditions.

     

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