On aerodynamic noises radiated by the pantograph system of high-speed trains
文献类型：期刊论文
| 作者 | Yu HH(喻华华) ; Li JC(李家春); Zhang HQ(张会琴)
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| 刊名 | Acta Mechanica Sinica
 |
| 出版日期 | 2013 |
| 卷号 | 29期号:3页码:399-410 |
| 通讯作者邮箱 | jcli05@imech.ac.cn |
| 关键词 | Aerodynamic noise NLAS FW–H acoustic analogy Pantograph system High-speed train |
| ISSN号 | 0567-7718 |
| 产权排序 | [Yu, Huahua; Li, Jiachun; Zhang Huiqin] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Li, JC (reprint author), Chinese Acad Sci, Inst Mech, LMFS, Beijing 100190, Peoples R China. |
| 中文摘要 | Pantograph system of high-speed trains become significant source of aerodynamic noise when travelling speed exceeds 300 km/h. In this paper, a hybrid method of non-linear acoustic solver (NLAS) and Ffowcs Williams–Hawkings (FW–H) acoustic analogy is used to predict the aerodynamic noise of pantograph system in this speed range. When the simulation method is validated by a benchmark problem of flows around a cylinder of finite span, we calculate the near flow field and far acoustic field surrounding the pantograph system. And then, the frequency spectra and acoustic attenuation with distance are analyzed, showing that the pantograph system noise is a typical broadband one with most acoustic power restricted in the medium-high frequency range from 200 Hz to 5 kHz. The aerodynamic noise of pantograph systems radiates outwards in the form of spherical waves in the far field. Analysis of the overall sound pressure level (OASPL) at different speeds exhibits that the acoustic power grows approximately as the 4th power of train speed. The comparison of noise reduction effects for four types of pantograph covers demonstrates that only case 1 can lessen the total noise by about 3 dB as baffles on both sides can shield sound wave in the spanwise direction. The covers produce additional aerodynamic noise themselves in the other three cases and lead to the rise of OASPLs. |
| 学科主题 | 流动噪声与控制 |
| 分类号 | 二类 |
| 收录类别 | SCI ; EI ; CSCD |
| 资助信息 | The project was supported by the National Key Technology R&D Program (2009BAG12A03) and the Knowledge Innovation Project of Chinese Academy of Sciences of China (KJCX2-EW-L02-1). |
| 原文出处 | http://link.springer.com/article/10.1007/s10409-013-0028-z |
| 语种 | 英语 |
| WOS记录号 | WOS:000323736400011 |
| 公开日期 | 2013-08-24 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/47363]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 GB/T 7714 | Yu HH,Li JC,Zhang HQ. On aerodynamic noises radiated by the pantograph system of high-speed trains[J]. Acta Mechanica Sinica,2013,29(3):399-410. |
| APA | Yu HH,Li JC,&Zhang HQ.(2013).On aerodynamic noises radiated by the pantograph system of high-speed trains.Acta Mechanica Sinica,29(3),399-410. |
| MLA | Yu HH,et al."On aerodynamic noises radiated by the pantograph system of high-speed trains".Acta Mechanica Sinica 29.3(2013):399-410. |
入库方式： OAI收割
来源：力学研究所
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