Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Noise and flow analysis of lift-type disk wind power System

양력형 디스크 풍력 발전기의 유동 및 소음 해석

  • Ko, Seungchul (Department of Mechanical Engineering, Yonsei University) ;
  • Na, Jisung (Department of Mechanical Engineering, Yonsei University) ;
  • Lee, Joon Sang (Department of Mechanical Engineering, Yonsei University)
  • Received : 2017.12.09
  • Accepted : 2017.12.29
  • Published : 2017.12.31
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Abstract

In this study, we investigate the flow characteristics of lift-type disk which behaves the up-down motion using the large eddy simulation (LES) and immersed boundary method (IBM). Also, we perform the noise analysis using pressure field at 1.35 m distance and reveal the cause of noise to observe the vortical structure analysis of flow result. It is observed that vortical structure and wind shear were generated at leading edge and tower with high velocity deficit and flow separation. High magnitude of flow noise was observed in low frequency range which is from 30 Hz to 60 Hz. It was observed that vortical structure at leading edge was generated in frequency range from 33.3 Hz to 41.6 Hz. Temporal characteristic in vortical structure at leading edge was similar to noise characteristics, having the similar frequency ranges.

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References

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