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PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
Experimental Study on the effect of Crosswind on a Container Train with Different Load Configurations
S. Giappino, S. Melzi, G. Tomasini and M. Villani
Department of Mechanical Engineering, Politecnico di Milano, Italy
S. Giappino, S. Melzi, G. Tomasini, M. Villani, "Experimental Study on the effect of Crosswind on a Container Train with Different Load Configurations", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 31, 2014. doi:10.4203/ccp.104.31
Keywords: freight train, crosswind, container, aerodynamic coefficients.
Increasing the operating speed of freight trains constitutes an important factor to improve rail transportation competitiveness towards road transportation. As a drawback, higher speeds may pose safety issues associated also with crosswind effects. The design of a freight wagon is usually characterized by wide sections with a high drag coefficient, which likely increases the risk of derailment or rollover. Also train-set composition may play a role in affecting the running safety, especially when a series of empty vehicles is followed by a loaded one, which can be found to be completely exposed to wind action. The paper investigates the aerodynamic responses of a freight train, for intermodal transportation, to crosswind using a series of wind tunnel tests. A 1:20 model of a freight train composed by an engine and two flat-car vehicles was instrumented with force balances to measure the aerodynamic coefficient on each vehicle and each container. Aerodynamic coefficient as function of yaw angle between wind and train-set are eventually presented.
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