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http://dx.doi.org/10.7782/JKSR.2016.19.6.709

Study of Shape Optimization for Aerodynamic Drag Reduction of High-speed train  

Yun, Su-Hwan (High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Kwak, Min-Ho (High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Park, Choon-Soo (High-speed Railroad Systems Research Center, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.19, no.6, 2016 , pp. 709-716 More about this Journal
Abstract
To reduce the aerodynamic drag of high speed trains, aerodynamic drag of KTX-Sancheon was analyzed in detail according to individual components. Aerodynamic drag values of the power cars (front car, rear car) and bogies are about 42.9% and 10.1% of the total aerodynamic drag, respectively. For the aerodynamic drag reduction of a power-car, a nose shape optimization was conducted using the Broyden-Fletcher-Goldfarb-Shanno optimum method. Shape change of a power car and bogie fairing adaptation are used to reduce the aerodynamic drag of a car body. The aerodynamic drag of the optimized train-set dropped by 15.0% compared to the aerodynamic drag of the KTX-Sancheon; a running resistance reduction of 12% is expected at the speed of 350km/h.
Keywords
High-speed train; Aerodynamic drag; Running resistance; Nose shape optimization; Bogie fairing;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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