时速600 km等级高速磁浮列车气动噪声特征数值仿真研究  

Numerical Simulation of Aerodynamic Noise Characteristics of High-Speed Maglev Train with a Speed of 600 km·h^(-1)

作　　者：张洁[1,2,3] 吴雨薇 高建勇 高广军 杨志刚[1,2,3] ZHANG Jie;WU Yuwei;GAO Jianyong;GAO Guangjun;YANG Zhigang(Key Laboratory of Traffic Safety on Track,Ministry of Education,School of Traffic&Transportation Engineering,Central South University,Changsha Hunan 410075,China;Joint International Research Laboratory of Key Technologies for Rail Traffic Safety,Central South University,Changsha Hunan 410075,China;National and Local Joint Engineering Research Center of Safety Technology for Rail Vehicle,Changsha Hunan 410075,China)

机构地区：[1]中南大学交通运输工程学院轨道交通安全教育部重点实验室,湖南长沙410075 [2]中南大学轨道交通安全关键技术国际合作联合实验室,湖南长沙410075 [3]轨道交通列车安全保障技术国家地方联合工程研究中心,湖南长沙410075

出　　处：《中国铁道科学》2021年第6期112-121,共10页China Railway Science

基　　金：国家重点研发计划课题(2020YFA0710903);中央高校财政经费资助项目(202045014);中国国家铁路集团有限公司科技研究开发计划课题(P2019J008)。

摘　　要：当磁浮列车运行速度超过400 km·h^(-1)时,四极子声源对列车远场噪声的影响不容忽视。基于大涡模拟(LES)方法和基尔霍夫-福茨.威廉姆-霍金斯(Kirchhoff-Ffowcs Williams and Hawkings,K-FWH)方程,通过合理构建可穿透积分面,对不同速度等级下磁浮列车的偶极子、四极子声源特征进行数值仿真分析。结果表明:尾车流线型区域附面层分离引起的空间扰动是磁浮列车气动发声的根源;列车偶极子声源主要分布在磁浮列车头/尾车无线电终端周围、头/尾车流线型抱轨底部以及尾车流线型鼻尖点区域,四极子声源主要分布在尾流区域;当列车分别以400,500及600 km·h^(-1)3个速度级运行时,四极子声源辐射能量分别为62.4%,63.3%和71.7%,均超过偶极子声源,占据主导地位。When the speed of maglev trains exceeds 400 km·h^(-1),the influence of quadrupole sound source on the far-field noise of train cannot be ignored.Based on large eddy simulation(LES)method and Kirchhoff-Ffowcs Williams and Hawkings(K-FWH)equations,the characteristics of dipole and quadrupole sound sources of maglev trains at different speed levels were simulated and analyzed by constructing reasonable penetrable integral surface.The results show that the aerodynamic sound source of maglev trains is the spatial disturbance caused by the separation of boundary layers on the streamline area of tail car.The dipole sound source of maglev trains is mainly distributed around the radio terminal of the head/tail cars,the rail holding bottom of the streamlined head/tail cars and the nose tip area of the tail car,while the quadrupole sound source is mainly distributed in the wake area.With the train running at the speed levels of 400,500 and 600 km·h^(-1),the radiation energy of the quadrupole sound source is 62.4%,63.3% and 71.7% respectively,which are higher than those of dipole sound source and occupy the dominant position.

关 键 词：高速磁浮列车 气动噪声 可穿透积分面 大涡模拟 速度级 

分 类 号：U292.917[交通运输工程—交通运输规划与管理]