IMECH-IR  > 流固耦合系统力学重点实验室
Numerical simulations investigations of flow fields underneath the high speed trains
Zhao G; Li H; Yao Y; Guo DL(郭迪龙); Yang GW(杨国伟)
Source PublicationPROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
2014
Conference NameTHE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Conference Date8-11 April 2014
Conference PlaceAjaccio, Corsica, France
AbstractThe flow field underneath the train was numerically investigated by using RANS and DES. The influence of wheel rotations on the flow field was further explored. The pulse pressure which is possibly induced by the complicated vortices under the train, especially in the bogie regions, could damage the bottom structures of the train. The aerodynamic drag from components below the train were a large contributing factor to the total drag, and the aerodynamic loads on the bottom of the train affected the total loads of the train significantly. The wheel rotations had some influence on the flow in the bogie cavity, and had almost no effect on the steady aerodynamic loads; but significantly influenced unsteady loads. © Civil-Comp Press, 2014.
KeywordAerodynamic loads Aerodynamics Bogies (railroad rolling stock) Flow fields Railroad cars Railroad transportation Railroads Wheels Aerodynamic characteristics Contributing factor High speed train (HST) Pulse pressure Total drags Total load Unsteady loads
ISBN978-1-905088-59-1
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78002
Collection流固耦合系统力学重点实验室
AffiliationKey Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Zhao G,Li H,Yao Y,et al. Numerical simulations investigations of flow fields underneath the high speed trains[C],2014.
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