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- 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.
- Authors
Chen, Zheng-Wei; Rui, En-Ze; Liu, Tang-Hong; Ni, Yi-Qing; Huo, Xiao-Shuai; Xia, Yu-Tao; Li, Wen-Hui; Guo, Zi-Jian; Zhou, Lei
- Abstract
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.
- Subjects
HIGH speed trains; WINDBREAKS, shelterbelts, etc.; AERODYNAMIC load; MULTIBODY systems; YAWING (Aerodynamics); RAILROADS
- Publication
Applied Sciences (2076-3417), 2022, Vol 12, Issue 14, p7217
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app12147217