噪声与振动控制

›› 2011, Vol. 31 ›› Issue (4): 80-84.DOI: 10.3969/j.issn.1006-1355-2011.04.019

• 3.运载工具振动与噪声 • 上一篇    下一篇

高速列车气动噪声Lighthill声类比的有限元分析

杨晓宇1,高 阳2, 程亚军2,刘凤华2   

  1. （ 1．北京海基科技发展有限责任公司， 北京 100191；2. 长春轨道客车股份有限公司 技术中心基础研发部， 长春 130062 ）
  • 收稿日期:2010-08-20 修回日期:2010-12-14 出版日期:2011-08-18 发布日期:2011-08-18
  • 通讯作者: 杨晓宇

Finite Elements Analysis of High - speed Train Wind Noise in Lighthill’s Acoustic Analogy

<a href="https://nvc.sjtu.edu.cn/EN/article/advancedSearchResult.do?searchSQL=(((YANG Xiao-Yu[Author]) AND 1[Journal]) AND year[Order])" target="_blank">YANG Xiao-Yu</a><SUP></SUP>,<a href="https://nvc.sjtu.edu.cn/EN/article/advancedSearchResult.do?searchSQL=(((Ya-jun CHENG[Author]) AND 1[Journal]) AND year[Order])" target="_blank">Ya-jun CHENG</a><SUP></SUP>,<a href="https://nvc.sjtu.edu.cn/EN/article/advancedSearchResult.do?searchSQL=(((Feng-hua LIU[Author]) AND 1[Journal]) AND year[Order])" target="_blank">Feng-hua LIU</a><SUP></SUP>   

  1. ( 1. Senior Analyst, Hi-Key Technology Inc., Beijing 100191, China;2. Changchun Railway Vehicles Co. Ltd., Changchun 130062, China )
  • Received:2010-08-20 Revised:2010-12-14 Online:2011-08-18 Published:2011-08-18
  • Contact: YANG Xiao-Yu

摘要： 随列车行驶速度逐年提高，气动噪声源逐渐超越轮轨噪声成为高速列车最主要噪声源。通过ACTRAN - Aeroacoustics建立基于Lighthill声类比理论的高速列车气动噪声CFD/CAA混合数值分析模型。计算并讨论非定常流场与气动声场计算结果，并分析此数值模型可以进一步完善的一些重要方面。目前数值模拟结果表明列车高速行驶状态气动噪声源主要集中在与车身气动外形密切相关的三类位置上，且通过当前模型可以有效剖析列车车身气动外形设计对气动噪声的影响以及相应的高速列车低噪音优化途径。

关键词: 声学, 气动声学, 声类比, 有限元, 高速列车, 风噪声

Abstract: With the constant increase of the trains’ speed, the aerodynamic noise gradually succeeds the traditional track noise and becomes the main noise source of the high-speed trains. In this paper, a hybrid CFD/CAA wind noise model for the high speed trains based on Lighthill’s analogy is constructed utilizing a professional finite elements acoustic simulator ACTRAN-Aeroacoustics. Numerical results of fluid and acoustic fields are reported and discussed. Some important issues for further development of the simulation model are discussed. The simulation results show that there are three dominant locations for the aerodynamic noise sources which depend on the shape of the train. With the use of this model, the influence of the train’s shape on the wind noise can be analyzed, and the optimization for low noise design of the train can be realized.

Key words: acoustics, aeroacoustics, acoustic analogy, finite elements, high-speed train, wind noise

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