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

doi:10.47176/jafm.15.02.32849

IMECH-IR > 流固耦合系统力学重点实验室

	Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures
	Yao Y(姚寅)1,2 ; Sun ZX(孙振旭)2 ; Li G3 ; Prapamonthon P 2,4; Cheng G 2; Yang GW(杨国伟)2
通讯作者	Sun, Z.(sunzhenxu@imech.ac.cn)
发表期刊	JOURNAL OF APPLIED FLUID MECHANICS
	2022-03-01
卷号	15 期号:2 页码:617-631
ISSN	1735-3572
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.
关键词	High speed train Pantograph Resistance Aerodynamic noise Acoustic finite element method
DOI	10.47176/jafm.15.02.32849
收录类别	SCI
语种	英语
WOS记录号	WOS:000804485100016
WOS研究方向	Thermodynamics ; Mechanics
WOS类目	Thermodynamics ; Mechanics
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]
项目资助者	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
论文分区	Q4
力学所作者排名	1
RpAuthor	Sun, Z.
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/89598
专题	流固耦合系统力学重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 3.CRRC Qingdao Sifang Co Ltd, Qingdao 266111, Shandong, Peoples R China; 4.King Mongkuts Inst Technol Ladkrabang, Int Acad Aviat Ind, Bangkok 10520, Thailand
推荐引用方式 GB/T 7714	Yao Y,Sun ZX,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	姚寅,孙振旭,Li G,Prapamonthon P,Cheng G,&杨国伟.(2022).Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures.JOURNAL OF APPLIED FLUID MECHANICS,15(2),617-631.
MLA	姚寅,et al."Numerical Investigation on Aerodynamic Drag and Noise of Pantographs with Modified Structures".JOURNAL OF APPLIED FLUID MECHANICS 15.2(2022):617-631.

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