Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures

doi:10.47176/jafm.15.02.32849

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures
	Yao, Y.3,4; Sun, Z.3; Li, G.2; Prapamonthon, P.1,3; Cheng, G.3; Yang, G.3
刊名	JOURNAL OF APPLIED FLUID MECHANICS
	2022-03-01
卷号	15 期号:2 页码:617-631
关键词	High speed train Pantograph Resistance Aerodynamic noise Acoustic finite element method
ISSN号	1735-3572
DOI	10.47176/jafm.15.02.32849
通讯作者	Sun, Z.(sunzhenxu@imech.ac.cn)
英文摘要	It is well known that the pantograph, which works as a complex component of high-speed trains, is an important source of aerodynamic drag and aerodynamic noise of a high-speed train (HST) that can affect HST performance, comfort for passengers, and quietness of nearby communities. Thus, comprehensive studies on aerodynamic characteristics including aerodynamic drag and aerodynamic noise obtained by the pantograph need to be conducted. This work presents the aerodynamic characteristics including aerodynamic resistance and aerodynamic noise generated by the prototype pantograph of a high-speed train running at a speed of 300 km/h using numerical techniques of improved delayed detached-eddy simulation (IDDES) and acoustic finite element method (FEM). Then, the structure of the original pantograph is modified by wrapping the insulators, and the base frame, so that aerodynamic resistance and aerodynamic noise may be reduced as expected. Numerical results obtained from the pantograph without modification, with two modifications to the original design i.e. the base frame, and the insulators, are discussed. Compared to the original pantograph, the two modifications of the pantograph at the base frame and the support insulators are conducive to reducing the aerodynamic drag of the pantograph. However, the results also show that the modified insulator may not achieve considerable success in noise reduction. Only the modified base frame shows that noise is reduced significantly. Therefore, this suggests that the pantograph with base frame modification is a better choice for resistance and noise reduction.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences (class B)[XDB22020000] ; Informatization Plan of the Chinese Academy of Sciences[XXH13506-204] ; Youth Innovation Promotion Association CAS[2019020]
WOS研究方向	Thermodynamics ; Mechanics
语种	英语
WOS记录号	WOS:000804485100016
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences (class B) ; Informatization Plan of the Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89597]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Sun, Z.
作者单位	1.King Mongkuts Inst Technol Ladkrabang, Int Acad Aviat Ind, Bangkok 10520, Thailand 2.CRRC Qingdao Sifang Co Ltd, Qingdao 266111, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yao, Y.,Sun, Z.,Li, G.,et al. Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures[J]. JOURNAL OF APPLIED FLUID MECHANICS,2022,15(2):617-631.
APA	Yao, Y.,Sun, Z.,Li, G.,Prapamonthon, P.,Cheng, G.,&Yang, G..(2022).Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures.JOURNAL OF APPLIED FLUID MECHANICS,15(2),617-631.
MLA	Yao, Y.,et al."Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures".JOURNAL OF APPLIED FLUID MECHANICS 15.2(2022):617-631.