• 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 25 Issue 2
Mar.  2012
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Article Contents
LI Renxian, GUAN Yongjiu, ZHAO Jing, ZHAO Jiwei. Aerodynamic Analysis on Entrance Hood of High Speed railway Tunnels[J]. Journal of Southwest Jiaotong University, 2012, 25(2): 175-180. doi: 10.3969/j.issn.0258-2724.2012.02.001
Citation: LI Renxian, GUAN Yongjiu, ZHAO Jing, ZHAO Jiwei. Aerodynamic Analysis on Entrance Hood of High Speed railway Tunnels[J]. Journal of Southwest Jiaotong University, 2012, 25(2): 175-180. doi: 10.3969/j.issn.0258-2724.2012.02.001

Aerodynamic Analysis on Entrance Hood of High Speed railway Tunnels

doi: 10.3969/j.issn.0258-2724.2012.02.001
  • Received Date: 17 Jan 2011
  • Rev Recd Date: 17 Apr 2011
  • Publish Date: 25 Apr 2012
  • Based on computational fluid dynamics method, the effects of tunnel entrance hood structure to aerodynamic influence in tunnel were analyzed by numerical simulation as high speed train running into tunnels. The influences of some structure factors were calculated, such as length of transition section, length of bumper section, rate of open hole on entrance hood, entrance structure of entrance hood and so on. Simulation results show that the effects of length of transition section and entrance structure of entrance hood to the aerodynamic influence are very small; length of bumper section is by no mean the longer the batter, there is an optimum length for bumper section as other structure parameters fixed; opening holes on entrance hood will assist reduce the peak of pressure gradient in tunnel, but will make the peak air pressure increase; and entrance hood installed at tunnel entrance will reduce the peak pressure of pressure pulse as two trains passing through each other in tunnel.

     

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