Aerodynamic Noise Analysis of High-Speed Train Pantograph Under Different Fairings
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.
NETL
NSTL
万方数据
维普
