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 Publication PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Conference Name THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Conference Date 8-11 April 2014
Conference Place Ajaccio, Corsica, France
Abstract The 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.
Keyword Aerodynamic loads
Bogies (railroad rolling stock)
High speed train (HST)
Indexed By EI
Document Type 会议论文
Affiliation Key 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]PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE,2014.
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