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http://dx.doi.org/10.7782/JKSR.2013.16.3.169

Aerodynamic Drag Reduction on High-performance EMU Train by Streamlined Shape Modification  

Kwon, Hyeok-Bin (Korea Railroad Research Institute)
Hong, Jai-Sung (Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.16, no.3, 2013 , pp. 169-174 More about this Journal
Abstract
The effect of modifying the shape of a high-performance EMU train on the aerodynamic drag is studied here using Computational Fluid Dynamics(CFD) based on three dimensional Steady-state Navier-Stokes equation and two equation turbulence modeling. FLUENT 12 and Gambit 2.4.6 are employed for a numerical simulation of the aerodynamic drag of a streamlined-shape train as well as a proto type train. The characteristics of the aerodynamic drag of trains in tunnels are analyzed in a comparison with these characteristics in an open space. The contribution of the aerodynamic drag of each case is also investigated to establish principal pertaining to drag reduction for urban trains in tunnels. The aerodynamic drag of a streamlined train was reduced to 9.8% relative to a proto-type train with a blunt nose and a protruding roof facility and underbody shape: the running resistance is expected to be reduced by as much as 4% at a running speed of 80km/h.
Keywords
Aerodynamic drag; tunnel; running resistance; unban train; Aerodynamic design;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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