
高速列车不同受电弓系统气动噪声特性分析
姚永芳
,孙振旭,刘 文,杨国伟
(中国科学院力学研究所流固耦合与系统力学重点实验室,北京市海淀区 100190)
摘 要:受电弓诱发气动噪声是高速列车重要的气动噪声源,对安装于高速列车不同受电弓外
形在 350km/h 运行速度下诱发气动噪声进行特性分析。通过搭建受电弓和车厢风洞模型,采用
大涡模拟(LES)计算外部瞬态流场。通过直接边界元法(DBEM)将脉动压力转化为气动噪
声,对比分析受电弓平整安装和下沉安装时,车厢的近场和远场气动噪声频谱特性和分布规律,
同时对比升弓和降弓在两种情形下的特性差异。结果表明:1) 受电弓下沉安装时气动噪声性能
较平整安装更好;2) 降弓诱发气动噪声在同等情形下比升弓更大。
关键词:高速列车;受电弓;气动噪声;大涡模拟;声学边界元
Analysis of aerodynamic noise characteristics of high-speed
train with different electric bow systems
Yao Y F,Sun Z X, Liu W, Yang G W
(key laboratory for mechanics in fluid solid coupling systems, institute of mechanics, Chinese Academy of
Sciences, Beijing, China)
Abstract: The aerodynamic noise of high speed train at the speed of 350km/h is simulated. The
pantograph and the carriage wind tunnel model are built, and using large eddy simulation (LES) to
calculate the external transient flow field. The pulsating pressure has the characteristics of the dipole
sound source, which is converted to aerodynamic noise by the direct boundary element method
(DBEM). The spectrum characteristics and distribution of near field and far-field aerodynamic noise
of pantograph are compared in the flat installation and sinking installation. At the same time, the
characteristics between the dropping and rising bow are compared. The results show that: 1)
aerodynamic noise performance is better when pantograph sinks; 2) the aerodynamic noise induced by
the falling bow is larger than the pantograph installed ordinarily under the same condition.
Key words: high-speed train; pantograph; aerodynamic noise; large eddy simulation; acoustic
boundary element
作者简介:姚永芳, 女,云南昭通人,博士,研究方向:高速列车空气动力学、高速列车室内外噪声、气
动外形优化. E-mail:yaoyongfang@imech.ac.cn
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