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, "A Computational Fluid Dynamics Comparison of the Underflow of Different Commercial High-Speed Trains", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 129, 2015. doi:10.4203/ccp.108.129

Keywords: high-speed train, aerodynamics, ANSYS Fluent, underflow.

Summary

In this paper, an aerodynamic comparison between the underbody flow of three different commercial high-speed trains (ETR500, TGV Duplex and TALGO Avril) has been performed using the commercial software ANSYS Fluent. These models have been selected because of the noticeable differences in the configuration and position of the bogies/wheel sets followed by the manufacturers. The purpose of this study is to elucidate which configuration is aerodynamically more efficient and to evaluate the effect of them on the track, estimating the risk of ballast flight. Three different simulations were performed, revealing that the values of drag force resistance, velocity near the track and wall shear stress in the ballast layer relative to the ETR500 are the highest, followed by the TGV Duplex and the TALGO Avril. The size of the ballast stones with more probability of being displaced in each case was also calculated by two different criteria. This study concluded that the configurations followed by TALGO Avril and ETR500 show, respectively, the best and the worst aerodynamic performance of the selected high-speed trains.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 129 A Computational Fluid Dynamics Comparison of the Underflow of Different Commercial High-Speed Trains C. Gil, C. Paz, E. Suárez and M. Conde School of Industrial Engineering, University of Vigo, Spain doi:10.4203/ccp.108.129 purchase the full-text of this paper Full Bibliographic Reference for this paper , "A Computational Fluid Dynamics Comparison of the Underflow of Different Commercial High-Speed Trains", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 129, 2015. doi:10.4203/ccp.108.129 Keywords: high-speed train, aerodynamics, ANSYS Fluent, underflow. Summary In this paper, an aerodynamic comparison between the underbody flow of three different commercial high-speed trains (ETR500, TGV Duplex and TALGO Avril) has been performed using the commercial software ANSYS Fluent. These models have been selected because of the noticeable differences in the configuration and position of the bogies/wheel sets followed by the manufacturers. The purpose of this study is to elucidate which configuration is aerodynamically more efficient and to evaluate the effect of them on the track, estimating the risk of ballast flight. Three different simulations were performed, revealing that the values of drag force resistance, velocity near the track and wall shear stress in the ballast layer relative to the ETR500 are the highest, followed by the TGV Duplex and the TALGO Avril. The size of the ballast stones with more probability of being displaced in each case was also calculated by two different criteria. This study concluded that the configurations followed by TALGO Avril and ETR500 show, respectively, the best and the worst aerodynamic performance of the selected high-speed trains. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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