IMECH-IR  > 流固耦合系统力学重点实验室
INFLUENCE OF TYPICAL SUBGRADE STRUCTURES ON AERODYNAMIC CHARACTERISTICS OF HIGH SPEED TRAINS IN CROSS WIND CONDITIONS
Sun ZX(孙振旭); Yang GW(杨国伟)
Source PublicationPROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2018, VOL 2
2018
PagesV002T11A010
Conference NameASME Fluids Engineering Division Summer Meeting (FEDSM2018)
Conference DateJUL 15-20, 2018
Conference PlaceMontreal, CANADA
AbstractDue to geographical and environmental constraints, highspeed railways use a variety of subgrade structures such as ground, embankments with different height, viaducts, etc. When trains run on embankments and viaducts, the flow around the car body is more complex than the ground. Under the action of crosswind, there are obvious differences in the cross-wind aerodynamic characteristics of high-speed trains on different subgrade structures. The unreasonable subgrade structure will affect the cross-wind safety of the train. At the same time, the structure of the train is complex, the bogie and pantograph have an important role on the flow field characteristics of the train, and the over simplified profile of the short train cannot accurately reflect the true aerodynamic characteristics of the train. In the present paper, in order to study the influence of typical subgrade structure on the aerodynamic characteristics of high speed trains, a real high-speed train with 9 carriages at the speed of 200 km/h was taken for case study, and the details of windshields, bogies and pantographs were taken into consideration. The cross wind velocities were chosen as 20, 30, 35 and 40 m/s. The aerodynamics performance of the highspeed train under the four conditions of plane ground, 3m embankment, 6m-embankment and viaduct were simulated and compared, and the differences and regularities in the aerodynamic characteristics under cross wind conditions on different subgrade were analyzed. The results provide a reference for train safety control on complex subgrade structures under cross wind condition.
WOS IDWOS:000457516200041
Funding OrganizationAdvanced Rail Transportation Special Plan in National Key Research and Development Project [2016YFB1200601-B13]
ISBN978-0-7918-5156-2
Indexed ByCPCI-S ; EI
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78564
Collection流固耦合系统力学重点实验室
Affiliation{Sun, Zhenxu、Yang, Guowei} Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Sun ZX,Yang GW. INFLUENCE OF TYPICAL SUBGRADE STRUCTURES ON AERODYNAMIC CHARACTERISTICS OF HIGH SPEED TRAINS IN CROSS WIND CONDITIONS[C],2018:V002T11A010.
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