Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Instantaneous Environmental Noise Simulation of High-speed Train by Quasi-stationary Analysis

준정적 해석을 이용한 고속 열차의 순간 환경소음 시뮬레이션

  • Cho, Dae-Seung (Dept. of Naval Architecture and Ocean Engi., Pusan National University) ;
  • Kim, Jin-Hyeong (Createch Co. ltd.) ;
  • Choi, Sung-Won (Dept. of Naval Architecture and Ocean Engi., Pusan National University) ;
  • Chung, Hong-Gu (Dept. of Naval Architecture and Ocean Engi., Pusan National University) ;
  • Sung, Hye-Min (Dept. of Naval Architecture and Ocean Engi., Pusan National University) ;
  • Jang, Seung-Ho (Korea Railroad Research Institute) ;
  • Koh, Hyo-In (Korea Railroad Research Institute)
  • Received : 2012.09.05
  • Accepted : 2012.09.27
  • Published : 2012.10.20
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Abstract

An instantaneous environmental noise simulation method emitted by a moving high-speed train by quasi-stationary analysis is proposed in this study. In the method, the propagation attenuations from stationary point sources on segmented railways to a receiver are calculated using a general purpose environmental noise prediction program ENPro based on the ISO 9613-2 method. Then, the instantaneous environmental noise at a receiver due to a moving high-speed train considering convection effect is evaluated with the information on the propagation attenuations from the instantaneous train location to the receiver and the sound power levels and directivity of stationary point sources evaluated by German Schall 03 (2006). To demonstrate the validity of proposed method, simulated and measured time history of instantaneous noise for KTX-I and KTX-II on running are compared and the results show that the method can be utilized for the train noise source identification as well as the simulation of instantaneous environmental noise emitted by a high-speed train.

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References

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