Aerodynamic Control in High Speed Trains with a Novel Design of Wing Set

Yıl 2019, Cilt: 6 Sayı: 1, 1 - 8, 29.03.2019

Mehmet Çiçek Gökhan Durmuş

Öz

Different from previous aerodynamic brake studies where aerodynamic brake is used to support conventional brakes, in this paper, a novel design of wing set for high speed trains (HSTs) has been proposed to provide safer and faster movement in curved rails. We have investigated, for the first time, the contribution of those two-axis wings on the running capability of a HST in a curved path to reduce derail or overturn risk. We have put 6 wings, 4 on sides which are proposed first time and 2 on top on each car. We have found that at same speed (0.8ma), minimum radius of curvature decreased from 7km to 3km when the wings are used. In the second part, the advantages of the aerodynamic drag brakes induced from proposed novel design wings at the speed of 0.8ma are discussed.

Anahtar Kelimeler

High-speed trains (HSTs), aerodynamic braking, aerodynamic control, railway, derail, wing

Kaynakça

• Halliday, R., Resnick, R., 1981. Fundamentals of physics, 2nd edition, John Wiley & Sons, New Jersey.
• Jianyong, Z., Mengling, W., Chun, T., Ying, X., Zhuojun, L., Zhongkai, C., 2013. Aerodynamic braking device for high-speed trains: Design, simulation and experiment. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 228: 260.
• Li, Z., Yang, M., Huang, S., Liang, X., 2017. A new method to measure the aerodynamic drag of high-speed trains passing through tunnels. Journal of Wind Engineering & Industrial Aerodynamics 171: 110–120.
• Pietrzak P., Piechna J., 2013. Numerical investigation of the controllable wing stall caused by the air injection, The Archive of Mechanical Engineering, LX(2): 199-216.
• Sharma, R.C., Dhingra, M., Pathak, R.K., 2015. Braking Systems in Railway Vehicles. International Journal of Engineering Research & Technology, 4(1): 206-211.
• Vasović, I., Maksimović, M., Puharić, M., Matić, D., Linić, S., 2011. Structural Analysis of Aerodynamic Brakes in High-Speed. Trains Scientific Technical Review, 61(2): 10-15.
• Wu, M., Zhu, Y., Tian, C., Fei, W., 2011. Influence of aerodynamic braking on the pressure wave of a crossing high-speed train. Journal of Zhejiang University-Science A (Appl Physics & Engineering) 12(12):979-984.
• Yoshimura, M., Saito, S., Hosaka, S., Tsunoda, H., 2000. Characteristics of the Aerodynamic Brake of the Vehicle on the Yamanashi Maglev Test Line. Quarterly report of Railway Technical Research Institute, 41(2): 74-78.
• Zhang, J., Wang, J., Wang, Q., Xiong, X., Gao, G., 2018. A study of the influence of bogie cut outs' angles on the aerodynamic performance of a high-speed train. Journal of Wind Engineering & Industrial Aerodynamics 175: 153–168.