Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 2002.11b
  • /
  • Pages.279-284
  • /
  • 2002
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on the Noise Reduction of the Engine cooling Fan used an Express Bus

고속 버스용 엔진 냉각 팬의 저소음화 연구

  • 오재응 (한양대학교 자동차공학과) ;
  • 심현진 (한양대학교 자동차공학과) ;
  • 이정윤 (경기대학교 전자.기계공학부)
  • Published : 2002.11.01
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Abstract

In this study, it has been developed the program for predicting the noise spectrum of axial flow fan. The radiated acoustic pressure is expressed the discrete frequency noise peaks at BPF(Blade passage frequency) and its harmonics by Wu's method and the line spectrum at the broad band by Wright's method. And this paper presents the characteristics of a fan noise due to modify the design parameters. Accordingly, it is obtained the design parameter values for noise reduction of fan.

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