Numerical simulations investigations of flow fields underneath the high speed trains

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 Publication	PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
	2014
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 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
ISBN	978-1-905088-59-1
Indexed By	EI
Language	英语
Document Type	会议论文
Identifier	http://dspace.imech.ac.cn/handle/311007/78002
Collection	流固耦合系统力学重点实验室
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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