Step-by-Step Numerical Prediction of Aerodynamic Noise Generated by High Speed Trains

作     者：Tian Li Deng Qin Ning Zhou Weihua Zhang Tian Li;Deng Qin;Ning Zhou;Weihua Zhang

作者机构：State Key Laboratory of Traction PowerSouthwest Jiaotong UniversityChengdu 610031China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2022年第35卷第2期

页      面：251-264页

核心收录：

学科分类：12[管理学] 083002[工学-环境工程] 1204[管理学-公共管理] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082304[工学-载运工具运用工程] 08[工学] 080204[工学-车辆工程] 0837[工学-安全科学与工程] 0802[工学-机械工程] 0823[工学-交通运输工程] 

基　　金：Supported by National Key Research and Development Program of China(Grant No.2020YFA0710902) National Natural Science Foundation of China(Grant No.12172308) 

主　　题：High-speed train Aerodynamic noise Sound source superposition Numerical prediction 

摘      要：In this paper,the unsteady flow around a high-speed train is numerically simulated by detached eddy simulation method(DES),and the far-field noise is predicted using the Ffowcs Williams-Hawkings(FW-H)acoustic *** reliability of the numerical calculation is verified by wind tunnel *** superposition relationship between the far-field radiated noise of the local aerodynamic noise sources of the high-speed train and the whole noise source is *** the aerodynamic noise of high-speed trains is derived from its different components,a stepwise calculation method is proposed to predict the aerodynamic noise of high-speed *** results show that the local noise sources of high-speed trains and the whole noise source conform to the principle of sound source energy *** the head,middle and tail cars of the high-speed train as noise sources,different numerical models are established to obtain the far-field radiated noise of each aerodynamic noise *** far-field total noise of high-speed trains is predicted using sound source superposition.A step-by-step calculation of each local aerodynamic noise source is used to obtain the superimposed value of the far-field *** is consistent with the far-field noise of the whole train model’s aerodynamic *** averaged sound pressure level of the far-field longitudinal noise measurement points differs by 1.92 *** step-by-step numerical prediction method of aerodynamic noise of high-speed trains can provide a reference for the numerical prediction of aerodynamic noise generated by long marshalling high-speed trains.