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D. Guo¹, J. Chen¹, D. Chen² and G. Yang¹

¹Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
²National Engineering Research Center for High-speed EMU, CRRC Qingdao Sifang Co., Ltd., China

doi:10.4203/ccc.7.3.10

D. Guo, J. Chen, D. Chen, G. Yang, "Aerodynamic Characteristics of High-Speed Train Entering and Leaving Tunnel Under Gorge Wind", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 3.10, 2024, doi:10.4203/ccc.7.3.10

Keywords: wind field model, high-speed train, gorge wind, entering and leaving tunnel, aerodynamic load, numerical simulation.

Abstract

The terrain of mountainous valleys is complex, and the distribution of wind speed along the railway is affected by the terrain of the valleys, resulting in uneven distribution of wind speed inside the valleys. Under the influence of the wind field in the gorge, the aerodynamic loads of the train when crossing bridges and tunnels change violently, causing a sudden increase in wheel-rail force, and reducing the safety of the train. In this paper CRH380A three-marshalling high-speed EMU is taken as the research object. the gorge wind field model is applied to the train running across the bridge and tunnel, and the effects of the gorge wind field model and the constant wind field model on the train's aerodynamic characteristics are compared. In the process of the train running across the bridge and tunnel, the difference in the aerodynamic load of each section under different wind fields is mainly reflected in the process of the train entering and leaving the wind field, and the transition section across the bridge and tunnel. The change rate and fluctuation amplitude of each aerodynamic load under a constant wind field are greater than those under gorge wind conditions.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 3.10 Aerodynamic Characteristics of High-Speed Train Entering and Leaving Tunnel Under Gorge Wind D. Guo¹, J. Chen¹, D. Chen² and G. Yang¹ ¹Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China ²National Engineering Research Center for High-speed EMU, CRRC Qingdao Sifang Co., Ltd., China doi:10.4203/ccc.7.3.10 Full Bibliographic Reference for this paper D. Guo, J. Chen, D. Chen, G. Yang, "Aerodynamic Characteristics of High-Speed Train Entering and Leaving Tunnel Under Gorge Wind", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 3.10, 2024, doi:10.4203/ccc.7.3.10 Keywords: wind field model, high-speed train, gorge wind, entering and leaving tunnel, aerodynamic load, numerical simulation. Abstract The terrain of mountainous valleys is complex, and the distribution of wind speed along the railway is affected by the terrain of the valleys, resulting in uneven distribution of wind speed inside the valleys. Under the influence of the wind field in the gorge, the aerodynamic loads of the train when crossing bridges and tunnels change violently, causing a sudden increase in wheel-rail force, and reducing the safety of the train. In this paper CRH380A three-marshalling high-speed EMU is taken as the research object. the gorge wind field model is applied to the train running across the bridge and tunnel, and the effects of the gorge wind field model and the constant wind field model on the train's aerodynamic characteristics are compared. In the process of the train running across the bridge and tunnel, the difference in the aerodynamic load of each section under different wind fields is mainly reflected in the process of the train entering and leaving the wind field, and the transition section across the bridge and tunnel. The change rate and fluctuation amplitude of each aerodynamic load under a constant wind field are greater than those under gorge wind conditions. download the full-text of this paper (PDF, 9 pages, 853 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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