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http://dx.doi.org/10.7782/JKSR.2014.17.3.165

Assessment of the Running Resistance of a High-speed Train Using a Coasting Test  

Kwon, Hyeok-Bin (Department of Transportation System Engineering, Korea National University of Transportation)
Kim, Seogwon (Korea Railroad Research Institute)
Oh, Hyuck Keun (Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.17, no.3, 2014 , pp. 165-170 More about this Journal
Abstract
The resistance to motion of the Korean next-generation high-speed train (HEUM-430X) was assessed on the basis of 12 coasting test runs at coasting speeds up to approximately 380km/h. Two different methods, a linear regression method and a time-integral method, were employed to calculate decelerations from the time-velocity data and the time-distance data, respectively, and an equation of resistance to motion was devised from the deceleration data calculated at each time section. The effect of an improvement of the aerodynamic shape on the resistance to motion was investigated, with the results showing that the running resistance was reduced by about 15% due to these improvements. An increase of approximately 28% of the running resistance was also noted when running in a tunnel relative to running through an open field.
Keywords
Resistance to motion; Coasting tests; Aerodynamic drag; High-speed train; Tunnel;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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