Characteristics of the aero-acoustic noise generated from the inter-coach spacing of a high-speed train

고속열차의 차간 공간에서 발생하는 공력소음의 특성

  • 박준홍 (한양대학교, 기계공학부) ;
  • 박찬경 (한국철도기술연구원, 고속철도사업단) ;
  • 최성훈 (한국철도기술연구원, 고속철도사업단)
  • Published : 2006.11.09

Abstract

The inter-coach spacing is one of the most important sources of the aero-acoustic noise of a high-speed train. When fluid at high speed flows over an open cavity, such as the inter-coach spacing, large acoustic pressure fields inside the cavity are produced by fluid/structure interactions at the downstream end of the cavity. In this study experiments were performed to investigate the characteristics the aero-acoustic noise generation from the inter-coach spacing of a high-speed train. Results of the measurement confirmed that the noise generated from the gap between mud-flaps are strongly dependent on the size of the gap.

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