Abstract
In this paper, the influence of different cross-section shapes of train body on aerodynamic performance has been investigated by numerical simulations. Computational fluid dynamics (CFD) is used with the second-order finite volume method with SST k-omega turbulence model. The results indicate that the aerodynamic performance is strongly affected by different cross-section shapes of train body, such as cross-sectional area, width-to-height ratio of cross-section, cross-section with straight or curved sides, etc.. Firstly, the drag coefficient and the overturning moment increase as the sides of cross-section become more curved. Secondly, the drag coefficient and the overturning moment are reduced as the width-to-height ratio of the cross-section is increased when the cross-sectional area is kept as a constant. Finally, air pressure pulse produced by two trains passing by in tunnel is approximately proportional to the cross-sectional area in a certain range and is independent to the cross-section shapes. Numerical results can be used for aerodynamic shape design of high speed trains.
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© 2012 Springer-Verlag Berlin Heidelberg
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Liu, C.H., Guo, D., Yao, S., Yang, G. (2012). The Influence of Different Cross-Section Shapes of Train Body on Aerodynamic Performance. In: Ni, YQ., Ye, XW. (eds) Proceedings of the 1st International Workshop on High-Speed and Intercity Railways. Lecture Notes in Electrical Engineering, vol 148. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27963-8_3
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DOI: https://doi.org/10.1007/978-3-642-27963-8_3
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-27962-1
Online ISBN: 978-3-642-27963-8
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