Diagnosis of noise sources from high‐speed trains using the microphone‐array technique

1998 ◽  
Vol 103 (5) ◽  
pp. 3007-3007 ◽  
Author(s):  
B. Barsikow
Keyword(s):  
High Speed ◽  
Microphone Array ◽  
Noise Sources ◽  
High Speed Trains

scholarly journals Noise Sources Localization on High-Speed Trains by using a Microphone Array

2012 ◽  
Vol 15 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Hee-Min Noh ◽  
Jun-Ho Cho ◽  
Sung-Hoon Choi ◽  
Suk-Yoon Hong
Keyword(s):  
High Speed ◽  
Microphone Array ◽  
Noise Sources ◽  
High Speed Trains

Designing a Microphone Array System for Noise Measurements on High-Speed Trains

2011 ◽  
Vol 14 (6) ◽  
pp. 477-483 ◽  
Author(s):  
Hee-Min Noh ◽  
Sung-Hoon Choi ◽  
Suk-Yoon Hong ◽  
Seog-Won Kim
Keyword(s):  
High Speed ◽  
Microphone Array ◽  
High Speed Trains ◽  
Noise Measurements

Investigation of noise sources in high-speed trains

2013 ◽  
Vol 228 (3) ◽  
pp. 307-322 ◽  
Author(s):  
Hee-Min Noh ◽  
Sunghoon Choi ◽  
Sukyoon Hong ◽  
Seog-Won Kim
Keyword(s):  
High Speed ◽  
Noise Sources ◽  
High Speed Trains

scholarly journals Identification and Suppression of Noise Sources Around High Speed Trains

2013 ◽  
Vol 7 (1) ◽  
pp. 131-143 ◽  
Author(s):  
Zhenxu Sun ◽  
Dilong Guo ◽  
Shuanbao Yao ◽  
Guowei Yang ◽  
Minggao Li
Keyword(s):  
High Speed ◽  
Noise Sources ◽  
High Speed Trains

scholarly journals Numerical analysis of aerodynamic noise from pantograph in high-speed trains using lattice Boltzmann method

2019 ◽  
Vol 11 (7) ◽  
pp. 168781401986399 ◽  
Author(s):  
Hee-Min Noh
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
High Speed ◽  
Aerodynamic Noise ◽  
Noise Generation ◽  
Noise Sources ◽  
High Speed Trains ◽  
Boltzmann Method

A pantograph in contact with a catenary for power supply is one of the major aerodynamic noise sources in high-speed trains. To reduce pantograph noise, it is essential to understand the noise generation mechanism of the pantograph. However, it is difficult to determine this mechanism through measurement. Therefore, in this study, the aerodynamic and acoustic performances of a pantograph in a high-speed train were investigated through numerical analysis using the lattice Boltzmann method. First, a real-scaled pantograph was modeled through computer-aided design. Then, the surface and volume meshes of the pantograph model were generated for simulation analysis. Numerical simulation was conducted at a speed of 300 km/h based on the lattice Boltzmann method. Based on the time derivative analysis of flow pressures, it was concluded that the panhead, joint, and base were the dominant noise sources in the pantograph. In particular, various vortexes were generated from the metalized carbon strip of the panhead. The peaks of the sound pressure level propagated from the panhead were 242, 430, and 640 Hz. The noise generation mechanism was analyzed through numerical simulation using noise characteristics.

INVESTIGATION OF THE CONTRIBUTIONS OF SOUND SOURCES TO EXTERNAL TRAIN NOISE

Akustika ◽  
2021 ◽  
pp. 250
Author(s):  
Denis Kuklin ◽  
Marina Butorina ◽  
Aleksandr Vasilyev
Keyword(s):  
High Speed ◽  
Experimental Studies ◽  
Sound Field ◽  
Sound Level ◽  
Railway Transport ◽  
Noise Sources ◽  
Sound Sources ◽  
High Speed Trains ◽  
Field Formation

The article discusses the method and results of in-situ investigations of the contributions of noise sources of railway transport to the external sound field. The main sources that form the external sound field are pantograph, inter-car coupler and wheel-rail interaction. Experimental studies were carried out for electric trains, passenger, high-speed and freight trains moving with different velocities. The tests have shown the wheel-rail pair makes the main contribution to the external field formation for all types of trains is made by. For high-speed trains and electric trains at speeds over 100 km/h, the noise of the pantograph begins to make a certain contribution. The sound level of electric and high-speed trains increases by 1.5 dBA and sound level of passenger and freight trains increases by 3-3.5 dBA with the increase of speed per each 10 km/h.

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