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

  • 2001.05a
  • /
  • Pages.762-767
  • /
  • 2001
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

Computation of Turbulent Flows and Aero-Acoustics from DLR Axial Fan

DLR 축류홴 주위의 난류유동 및 공력소음의 계산

  • 배일성 (인하대학교 기계공학과 대학원) ;
  • 장성욱 (인하대학교 기계공학과 대학) ;
  • 이승배 (인하대학교 기계공학과 에어로네트)
  • Published : 2001.05.01
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Abstract

LES formulation was applied to simulate the flow fields around rotating fan blades tested by DLR. The turbulent flows around fan blade rotating with 500 RPM were simulated and the far-field noise was exactly computed by using the Focus Williams and Hawkings equation with an inclusion of quadrapole source formulation. The dipole noise computed at the far-field by predicted drag and lift forces at steady state was in good agreement with experimental data and the dipole source was also found to be the major factor than other sound sources from unsteady calculation.

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