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1.中车长春轨道客车股份有限公司,吉林 长春 130062
2.中国铁路沈阳局集团有限公司 物资部,辽宁 沈阳 110001
3.中国铁路上海局集团有限公司 机务部,上海 200071
4.同济大学 上海地面交通工具风洞中心,上海 201804
5.上海市地面交通工具空气动力与热环境模拟重点实验室,上海 201804
张洪军,高级工程师,从事轨道车辆可靠性与舒适性研究;E-mail: 013200020808@crrcgc.cc
纸质出版日期:2024-05-10,
收稿日期:2023-12-25,
修回日期:2024-05-01,
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张洪军, 王钟辉, 徐育敏, 等. 高速列车转向架区域远场气动噪声计算方法探究[J]. 机车电传动, 2024(3): 53-60.
ZHANG Hongjun, WANG Zhonghui, XU Yumin, et al. Exploration of computational method for far-field aerodynamic noise from bogie zone of high-speed train[J]. Electric drive for locomotives,2024(3): 53-60.
张洪军, 王钟辉, 徐育敏, 等. 高速列车转向架区域远场气动噪声计算方法探究[J]. 机车电传动, 2024(3): 53-60. DOI:10.13890/j.issn.1000-128X.2024.03.007.
ZHANG Hongjun, WANG Zhonghui, XU Yumin, et al. Exploration of computational method for far-field aerodynamic noise from bogie zone of high-speed train[J]. Electric drive for locomotives,2024(3): 53-60. DOI:10.13890/j.issn.1000-128X.2024.03.007.
快速计算高速列车转向架区域远场辐射噪声是一个难点问题。首先,文章根据高速列车气动噪声以偶极子声源为主的特征,假设车辆表面声源由无数个偶极子声源组成,建立识别方法,并结合流体仿真计算对转向架区域进行声源识别。研究表明,转向架区域的主要偶极子气动声源分布在排障器、前轮等11个部件的近壁面上。其次,建立每个部件声源强度及其远场噪声计算方法,利用3个不同车速下的仿真计算结果拟合出每个部件的远场声压级与频率、车速、特征尺寸、传播距离的关系式,并对11个部件远场辐射噪声求和,得到转向架区域远场噪声计算的经验公式。结果表明,该拟合公式有一定的准确性,可快速推算该类高速列车不同缩比尺寸模型的转向架区域远场气动噪声。该方法可供其他车辆气动噪声辐射计算方法参考。
This paper addresses the challenges associated with quickly computing far-field radiated noise originating from the bogie zone of high-speed trains. Initially
an assumption was given that countless dipole sound sources are distributed on the train surface
reflecting the predominant nature of dipole sound sources in the aerodynamic noise of high-speed trains. This assumption led to the establishment of an identification method
which was then used to identify sound sources in the bogie zone
with the support of Computational Fluid Dynamics (CFD). Through this identification process
the main dipole aerodynamic sources were found to be located near the walls of 11 components within the bogie zone
including cow catchers and front wheels. Subsequently
computational methods were established to determine the sound source intensity and far-field noise respectively for these components. The simulation results at three different speeds were utilized to establish a relational expression of the far-field sound pressure level of each component concerning frequencies
train speeds
characteristic sizes
and propagation distances through fitting. The far-field radiated noise from the 11 components was aggregated to create an empirical formula for calculating far-field noise from the bogie zone. These findings demonstrate the satisfactory accuracy of the fitted formula in quickly computing the far-field aerodynamic noise of the bogie zone
based on models of varying scales for high-speed trains. This methodology also offers a reference for establishing computational methods for aerodynamic noise radiation of other types of vehicles.
高速列车转向架偶极子声源数值仿真风洞试验
high-speed trainbogiedipole sound sourcenumerical simulationwind tunnel experiment
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WANG Yigang, ZHU Langxian, WANG Yupeng, et al. Characteristic identification of aerodynamic noise sources in high-speed train bogie area[J]. Journal of southwest jiaotong university, 2023, 58(2): 261-271.
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