Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang Railway
Under strong winds, the effect of sudden windbreak transition (WT) on high-speed trains is severe, leading to a deterioration of train aerodynamics and sudden yawing motion of the car body. To address these problems, based on a high-speed train and the specific geometric conditions derived from Xinj...
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/7217 |
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| author | Zheng-Wei Chen En-Ze Rui Tang-Hong Liu Yi-Qing Ni Xiao-Shuai Huo Yu-Tao Xia Wen-Hui Li Zi-Jian Guo Lei Zhou |
| author_facet | Zheng-Wei Chen En-Ze Rui Tang-Hong Liu Yi-Qing Ni Xiao-Shuai Huo Yu-Tao Xia Wen-Hui Li Zi-Jian Guo Lei Zhou |
| author_sort | Zheng-Wei Chen |
| collection | DOAJ |
| description | Under strong winds, the effect of sudden windbreak transition (WT) on high-speed trains is severe, leading to a deterioration of train aerodynamics and sudden yawing motion of the car body. To address these problems, based on a high-speed train and the specific geometric conditions derived from Xinjiang railway, first, the impact of a WT on the train and reasons for sudden changes in aerodynamic forces were determined by flow structural analysis. Furthermore, based on a multibody system dynamic model, the dynamic responses to WT were analysed. The results show that the impacts of WT were the strongest on the head car. WT had a strong effect on the train due to the unreasonable structural shape and the insufficient height of the windbreak in the transition region. This led to a strong push effect on the train; subsequently, the train’s dynamic characteristics deteriorated. |
| first_indexed | 2024-03-09T03:43:01Z |
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| id | doaj.art-007f0c9f83de40ef96402f12c4a28d5f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T03:43:01Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-007f0c9f83de40ef96402f12c4a28d5f2023-12-03T14:37:09ZengMDPI AGApplied Sciences2076-34172022-07-011214721710.3390/app12147217Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang RailwayZheng-Wei Chen0En-Ze Rui1Tang-Hong Liu2Yi-Qing Ni3Xiao-Shuai Huo4Yu-Tao Xia5Wen-Hui Li6Zi-Jian Guo7Lei Zhou8National Rail Transit Electrification and Automation Engineering Technology Research Center (Hong Kong Branch), Hong Kong, ChinaNational Rail Transit Electrification and Automation Engineering Technology Research Center (Hong Kong Branch), Hong Kong, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, ChinaNational Rail Transit Electrification and Automation Engineering Technology Research Center (Hong Kong Branch), Hong Kong, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, ChinaDepartment of Civil and Environmental Engineering, The Hong Kong University of Science and Technolgy, Clear Water Bay, Kowloon, Hong Kong, ChinaUnder strong winds, the effect of sudden windbreak transition (WT) on high-speed trains is severe, leading to a deterioration of train aerodynamics and sudden yawing motion of the car body. To address these problems, based on a high-speed train and the specific geometric conditions derived from Xinjiang railway, first, the impact of a WT on the train and reasons for sudden changes in aerodynamic forces were determined by flow structural analysis. Furthermore, based on a multibody system dynamic model, the dynamic responses to WT were analysed. The results show that the impacts of WT were the strongest on the head car. WT had a strong effect on the train due to the unreasonable structural shape and the insufficient height of the windbreak in the transition region. This led to a strong push effect on the train; subsequently, the train’s dynamic characteristics deteriorated.https://www.mdpi.com/2076-3417/12/14/7217high-speed trainwindbreak transition (WT)crosswindaerodynamicsdynamic responses |
| spellingShingle | Zheng-Wei Chen En-Ze Rui Tang-Hong Liu Yi-Qing Ni Xiao-Shuai Huo Yu-Tao Xia Wen-Hui Li Zi-Jian Guo Lei Zhou Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang Railway Applied Sciences high-speed train windbreak transition (WT) crosswind aerodynamics dynamic responses |
| title | Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang Railway |
| title_full | Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang Railway |
| title_fullStr | Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang Railway |
| title_full_unstemmed | Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang Railway |
| title_short | Unsteady Aerodynamic Characteristics of a High-Speed Train Induced by the Sudden Change of Windbreak Wall Structure: A Case Study of the Xinjiang Railway |
| title_sort | unsteady aerodynamic characteristics of a high speed train induced by the sudden change of windbreak wall structure a case study of the xinjiang railway |
| topic | high-speed train windbreak transition (WT) crosswind aerodynamics dynamic responses |
| url | https://www.mdpi.com/2076-3417/12/14/7217 |
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