A Study on Aerodynamic Problems and Requirements for speed up of High-speed railway system

고속철도의 증속 시 공기역학적 문제 및 요구사항에 대한 연구

  • 권혁빈 (한국철도기술연구원 초고속열차연구실) ;
  • 김대상 (한국철도기술연구원 차륜궤도연구실) ;
  • 남성원 (한국철도기술연구원 철도환경연구실) ;
  • 윤수환 (한국철도기술연구원 차세대고속철도기술개발사업단) ;
  • 박춘수 (한국철도기술연구원 차세대고속철도기술개발사업단)
  • Published : 2011.05.26

Abstract

High-speed railway system is exposed to severe aerodynamic problems and has various requirements both on design and operation; 80% of running resistance is composed of aerodynamic drag, the cross-sectional area and portal shape of tunnel should be designed under aerodynamic consideration, and natural wind velocity should always be monitored to prevent the overturning of train by crosswinds. In addition, most of the aerodynamic problems are proportional to the running speed or square of the running speed. Thus, when the running speed of a high-speed railway system either on operation or under construction is to be increased, the aerodynamic problems should be assessed in advance and the countermeasures should be prepared to alleviate the aerodynamic problems to meet certain requirements. In this study, aerodynamic problems that could occur at speed up of high-speed line have been investigated and aerodynamic requirements to meet the increased operational speed have been studied referring the international and domestic rules, guidance, and recommendations.

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