The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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A Numerical Study on Aerodynamic Characteristics in Tunnel for High Speed Combi Train-HSB

여객/화물 복합열차 HSB의 터널 공력특성에 대한 시뮬레이션 연구

  • Rho, Joo-Hyun (Hyundai Rotem Company, R&D Center, High Speed Train Development Team)
  • 노주현 (현대로템 기술연구소 고속차량개발팀)
  • Received : 2014.09.16
  • Accepted : 2014.09.22
  • Published : 2014.10.01
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Abstract

The new high speed combi train prototype project was developed which named HSB. It runs over the speed of 330km/h. As the speed of the train exceeds over 300km/h, due to pressure change in tunnel, aerodynamic problems such as sudden drag increase, severe acoustic noise, passenger discomfort and tunnel pressure sonic boom were occurred. This aerodynamic characteristics in tunnel should be reviewed in early design state to enhance the performance and driving quality of new high speed train. In this paper, the aerodynamic characteristics in tunnel for HSB such as pressure waves in tunnel, a rate of pressure change in cabin and micro pressure wave that cause sonic boom outside tunnel are analyzed by 2D axisymmetric CFD simulations. The results are also compared with the value for ordinary high speed train like the KTX-Sancheon. It is helpful how to design the configuration of HSB train. Finally it shows that the HSB train was well designed in tunnel condition because all values fulfill the criterions on UIC code and Korean national regulations.

Keywords

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