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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Computation of Internal BPF Noise of Axial Circulating Fan in Refrigerators

냉장고 내 냉기순환용 축류홴에 의한 내부 블레이드-통과-주파수 소음 예측

  • 이승엽 (부산대학교 공과대학 기계공학부) ;
  • 허승 (부산대학교 공과대학 기계공학부) ;
  • 정철웅 (부산대학교 기계공학부) ;
  • 김석로 (LG전자 디지털어플라이언스 사업본부 냉장고 사업부) ;
  • 서민영 (LG전자 디지털어플라이언스 사업본부 냉장고 사업부)
  • Published : 2009.05.20
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Abstract

Internal aeroacoustics of an axial fan used for circulating cold air in refrigerators are computed by using the hybrid method where CFD, acoustic analogy and BEM techniques are utilized. The unsteady flow field around the axial fan is predicted by solving the incompressible RANS equations with the conventional CFD techniques. Then, main noise sources are extracted from this unsteady flow field predictions using Acoustic Analogy. Lastly, BPF noise generated from an axial fan are predicted using these modeled sources combined with the tailed Green function techniques, which are numerically solved by the BEM technique. This hybrid model is validated by comparing the prediction with the experiment. Then, parameter studies are carried out, which suggest a capability of the current method as a design tool for the low-noise of the current axial fan system in a refrigerator.

Keywords

References

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  1. Method to Reduce the Noise of the Machine Room of a Built-in Refrigerator vol.28, pp.5, 2018, https://doi.org/10.5050/KSNVE.2018.28.5.561
  2. Numerical and Experimental Investigation on Improvement of Flow and Noise Performances of Ice-fan Flow Piping System of Household Refrigerator vol.28, pp.6, 2018, https://doi.org/10.5050/KSNVE.2018.28.6.694