不同导流罩作用下高速列车受电弓气动噪声分析
Aerodynamic Noise Analysis of High-Speed Train Pantograph Under Different Fairings
荆尔铭 1马天放 2王明阳 1刘真1
作者信息
- 1. 大连交通大学机车车辆工程学院,辽宁 大连 116028
- 2. 中车大连机车车辆有限公司,辽宁 大连 116022
- 折叠
摘要
研究了导流罩对高速列车受电弓气动噪声特性的影响.先采用改进延迟分离涡模拟(IDDES)方法对高速列车受电弓流场进行数值模拟,然后用有限元-无限元法进行声学模拟,分析湍动能、检测点和受电弓表面的声压级变化规律.分析结果表明:导流罩能够对受电弓流场和声场产生显著影响,导流罩自身受到不可忽略的气动力,使带导流罩模型相比无导流罩模型总体湍动能大幅增加,进而使受电弓附近声压级增加.
Abstract
The influence of the fairing on the aerodynamic noise characteristics of the pantograph of high-speed train is studied.Firstly,the flow field of the pantograph of high-speed train is numerically simulated by the improved delayed separated vortex simulation(IDDES)method,and then the acoustic simulation is carried out by the finite element-infinite element method to analyze the variation of the turbulent kinetic energy,the detection point and the pressure level on the surface of the pantograph.The analysis results show that the fairing can have a significant impact on the flow field and sound field of the pantograph,and the fairing itself is subjected to the aerodynamic force that can not be ignored,so that the overall turbulent kinetic energy of the model with the fairing is greatly higher than that of the model without the fairing,and then the sound pressure level near the pantograph increases.
关键词
高速列车/导流罩/数值模拟/气动噪声Key words
high-speed train/fairing/numerical simulations/aerodynamic noise引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据