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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Design Study of Aerodynamic Noise Reduction in Centrifugal Compressor Part I : Performance Analysis and Noise Prediction

원심압축기의 공력소음 저감에 관한 설계연구 Part I : 성능해석 및 소음예측

  • 선효성 (서울대학교 기계항공공학부) ;
  • 이수갑 (서울대학교 기계항공공학부)
  • Published : 2004.03.01
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Abstract

The objective of this research is to suggest anoise prediction method for a centrifugal compressor. It is focused on the Blade Passing Frequency component which is regarded as the main part of the rotating impeller noise. Navier-Stokes solver is used to simulate the flow-field of the centrifugal compressor, and the time-dependent pressure data are calculated to perform the near-field noise prediction by using Ffowcs Williams - Hawkings formulation. Indirect Boundary Element Method is applied to consider the noise propagation effect. Pressure fluctuations of the inlet and the outlet in the centrifugal compressor impeller are presented and the sound pressure level prediction results are compared with the experimental data.

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References

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