Analysis of Aerodynamic Noise Characteristics of High-Speed Train Pantograph with Different Installation Bases | |
Yao YF(姚永芳); Sun ZX(孙振旭); Yang GW(杨国伟); Prapamonthon P | |
发表期刊 | APPLIED SCIENCES-BASEL |
2019-06-01 | |
卷号 | 9期号:11页码:21 |
摘要 | The high-speed-train pantograph is a complex structure that consists of different rod-shaped and rectangular surfaces. Flow phenomena around the pantograph are complicated and can cause a large proportion of aerodynamic noise, which is one of the main aerodynamic noise sources of a high-speed train. Therefore, better understanding of aerodynamic noise characteristics is needed. In this study, the large eddy simulation (LES) coupled with the acoustic finite element method (FEM) is applied to analyze aerodynamic noise characteristics of a high-speed train with a pantograph installed on different configurations of the roof base, i.e. flush and sunken surfaces. Numerical results are presented in terms of acoustic pressure spectra and distributions of aerodynamic noise in near-field and far-field regions under up- and down-pantograph as well as flushed and sunken pantograph base conditions. The results show that the pantograph with the sunken base configuration provides better aerodynamic noise performances when compared to that with the flush base configuration. The noise induced by the down-pantograph is higher than that by the up-pantograph under the same condition under the pantograph shape and opening direction selected in this paper. The results also indicate that, in general, the directivity of the noise induced by the down-pantograph with sunken base configuration is slighter than that with the flush configuration. However, for the up-pantograph, the directivity is close to each other in Y-Z or X-Z plane whether it is under flush or sunken roof base condition. However, the sunken installation is still conducive to the noise environment on both sides of the track. |
关键词 | high-speed train pantograph aerodynamic noise large eddy simulation acoustic finite element method |
DOI | 10.3390/app9112332 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000472641200160 |
关键词[WOS] | DIPOLE SOUND SOURCE |
WOS研究方向 | Chemistry ; Materials Science ; Physics |
WOS类目 | Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied |
资助项目 | Advanced Rail Transportation Special Plan in National Key Research and Development Project[2016YFB1200601-B13] ; Advanced Rail Transportation Special Plan in National Key Research and Development Project[2016YFB1200602-09] |
项目资助者 | Advanced Rail Transportation Special Plan in National Key Research and Development Project |
论文分区 | 二类 |
力学所作者排名 | 1 |
RpAuthor | Sun, Zhenxu |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/79446 |
专题 | 流固耦合系统力学重点实验室 |
推荐引用方式 GB/T 7714 | Yao YF,Sun ZX,Yang GW,et al. Analysis of Aerodynamic Noise Characteristics of High-Speed Train Pantograph with Different Installation Bases[J]. APPLIED SCIENCES-BASEL,2019,9,11,:21. |
APA | Yao YF,Sun ZX,Yang GW,&Prapamonthon P.(2019).Analysis of Aerodynamic Noise Characteristics of High-Speed Train Pantograph with Different Installation Bases.APPLIED SCIENCES-BASEL,9(11),21. |
MLA | Yao YF,et al."Analysis of Aerodynamic Noise Characteristics of High-Speed Train Pantograph with Different Installation Bases".APPLIED SCIENCES-BASEL 9.11(2019):21. |
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