Wind tunnel test study on influence of open/close operation on aerodynamic noise characteristics of high-speed pantographs
Artikel i vetenskaplig tidskrift, 2024

Wind tunnel tests of aerodynamic noise at wind speeds from 160 km/h to 324 km/h were carried out for high speed pantograph developed by Beijing CRRC CED Co. Ltd. The effects of wind speed and open/close operation status on pantograph aerodynamic noise characteristics were analyzed, and the pantograph aerodynamic noise at higher speed was predicted. The results show that the aerodynamic noise of the pantograph and its propagation characteristics are closely related to the wind speed and operating status. The panhead and nearby areas are prone to single-tone noise due to the influence of shedding vortices. The total sound pressure energy of the far-field noise increases with the power of 5.6 − 6.0 of wind speed. The total sound pressure levels of the pantograph far-field noise in the open/closed state are predicted to be about 106.8 dB and 106.6 dB respectively at the wind speed of 400 km/h by data fitting.

wind tunnel test

open/close operation status

high-speed train

aerodynamic noise

pantograph

Författare

Bo Li

Beijing CRRC CED Railway Electric Tech Company Limited

Sijun Huang

Beijing CRRC CED Railway Electric Tech Company Limited

Kailong Jin

Beijing CRRC CED Railway Electric Tech Company Limited

Southwest Jiaotong University

Xiaoyu Yang

Southwest Jiaotong University

Yamin Ma

Southwest Jiaotong University

Huadong Yao

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Jiqiang Niu

Southwest Jiaotong University

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)

1672-7207 (ISSN)

Vol. 55 5 1846-1854

Styrkeområden

Transport

Energi

Ämneskategorier

Energiteknik

Farkostteknik

Strömningsmekanik och akustik

DOI

10.11817/j.issn.1672-7207.2024.05.016

Mer information

Senast uppdaterat

2024-08-07