Analysis of Aeroacoustics Characteristics for Pantograph of High-Speed Trains

DU Jian; LIANG Jianying; TIAN Aiqin

doi:10.3969/j.issn.0258-2724.2015.05.025

Volume 28 Issue 5

Oct. 2015

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Journal of Southwest Jiaotong University > 2015 > 28(5): 935-941.

DU Jian, LIANG Jianying, TIAN Aiqin. Analysis of Aeroacoustics Characteristics for Pantograph of High-Speed Trains[J]. Journal of Southwest Jiaotong University, 2015, 28(5): 935-941. doi: 10.3969/j.issn.0258-2724.2015.05.025

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DU Jian, LIANG Jianying, TIAN Aiqin. Analysis of Aeroacoustics Characteristics for Pantograph of High-Speed Trains[J]. Journal of Southwest Jiaotong University, 2015, 28(5): 935-941. doi: 10.3969/j.issn.0258-2724.2015.05.025

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Analysis of Aeroacoustics Characteristics for Pantograph of High-Speed Trains

doi: 10.3969/j.issn.0258-2724.2015.05.025

Received Date: 20 Apr 2015
Publish Date: 25 Oct 2015

Abstract

Abstract

In order to study aerodynamic noise source distribution and frequency spectrum for the pantograph of high-speed trains, the flow field for the pantograph of high-speed trains was calculated using the computational fluid dynamics method, and the fluctuating pressure on the surface of the pantograph was obtained. On this basis, the far-field aerodynamic noise for the pantograph was computed using the FW-H equation. Computational results show that the aerodynamic noise for the pantograph of high-speed trains has obvious directivity, which is not affected by the train speed, and the total sound pressure level of the far-field measurement points reaches the maximum near the 10~20. Moreover, the total sound pressure level increases significantly with the train speed. The far-field aerodynamic noise has obvious main frequency that increases with the train speed. The beam at the top of the pantograph is a main contributor to the aerodynamic noise for the pantograph.
- high-speed train,
- pantograph,
- aerodynamic noise,
- fluctuating pressure,
- sound pressure level,
- directivity

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References(58)

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Analysis of Aeroacoustics Characteristics for Pantograph of High-Speed Trains

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