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Parametric Study on the Aerodynamic Drag of Ultra High-speed Train in Evacuated Tube - Part 2  

Kwon, Hyeok-Bin (한국철도기술연구원 초고속열차연구실)
Nam, Seong-Won (한국철도기술연구원 철도환경연구실)
Kim, Dong-Hyeon (한국철도기술연구원 철도환경연구실)
Jang, Yong-Jun (한국철도기술연구원 철도환경연구실)
Kang, Bu-Byoung (한국철도기술연구원 초고속열차연구실)
Publication Information
Journal of the Korean Society for Railway / v.13, no.1, 2010 , pp. 51-57 More about this Journal
Abstract
The aerodynamic drag of ultra high-speed train in evacuated tube have been calculated using computational fluid dynamics and the variation of aerodynamic drag for the change of major system parameter of tube-vehicle system such as the train speed, air density, and the tunnel diameter. The aerodynamic drag in the tube increases with increasing train speed, however, the ratio of drag increase in tube is larger than that on the open field, the V square rule. The aerodynamic drag decreases with increasing tunnel diameter and increasing air density, and the drag increasing for air density is almost linear just like that on open field. For some combination of the parameters, the trend of aerodynamic drag of train showed irregularity.
Keywords
Tube-Vehicle System; Ultra High-speed Train; Evacuated Tube; Aerodynamic Drag; Computational Fluid Dynamics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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