Electronic Science and Technology ›› 2022, Vol. 35 ›› Issue (1): 45-52.doi: 10.16180/j.cnki.issn1007-7820.2022.01.008

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Aerodynamic Noise Analysis for High-Speed Train’s Pantograph and Study on Noise Reduction of the Cavity of Pantograph

YUAN Xianpu1,MIAO Xiaodan2,YANG Jian1,YUAN Tianchen1,YUAN Ding1   

  1. 1. School of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai 201620,China
    2. School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science, Shanghai 201620,China
  • Received:2020-10-03 Online:2022-01-15 Published:2022-02-24
  • Supported by:
    National Natural Science Foundation of China(U1834201)


In view of the increasing speed of high-speed trains and the increasing aerodynamic noise of the pantograph, LES large eddy simulation, boundary layer noise source model and FW-H acoustic analogy method are used to carry out numerical simulation by establishing a local 1:1 aerodynamic noise analysis model of a certain type of pantograph. The contribution of aerodynamic noise of each part of the pantograph is studied, and the noise reduction effect of the jet noise reduction method for the cavity of the larger noise position is explored. The results show that the numerical simulation accuracy is accurate when the number of grids is 43.23 million. The insulator upstream of the pantograph cavity and the middle of the cavity are the main sources of aerodynamic noise. Before and after the jet noise reduction, the internal aerodynamic noise is broadband noise, the main energy is concentrated in 0~4 500 Hz. The inclined jet noise reduction is performed on the cavity at a traveling speed of 250 km·h-1, and the minimum sound pressure level of the vertical monitoring point 25 m away from the train is 81.65 dB, which is 2.64 dB lower than that before noise reduction.

Key words: high-speed train, pantograph, aerodynamic noise, large eddy simulation, FW-H acoustic model, numerical simulation, broadband noise, jet noise reduction

CLC Number: 

  • TP319