Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
권호 표지

Numerical Assessment of Wake Effect by Prevailing Wind Around Wido Island

주풍향에 의한 위도(蝟島) 근방의 후류 영향 평가

  • 유기완 (전북대학교, 항공우주공학과) ;
  • 장재경 (한국과학기술원 기계기술연구소)
  • Received : 2018.12.16
  • Accepted : 2018.12.24
  • Published : 2018.12.31

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Abstract

In this study, a three-dimensional Navier-Stokes simulation around Wido Island was performed to analyze the wake effect behind an island. A 10 m/s wind speed and pressure boundary conditions were assigned for the inflow and outflow boundary conditions, respectively. Wido Island was modeled using GIS data. A prevailing wind from the north-northwest direction was determined based on QuikSCAT satellite data. A computational domain of $40km{\times}20km{\times}5km$ covering Wido Island was applied for numerical analysis. Sixty points were specified to extract the wind speed data. A wind speed profile inside the atmospheric boundary layer was compared with a wind profile using a simple power law. It turns out that the wake effect decreases the mean wind speed by 5% more or less, which corresponds to a 14% decrease in wind energy. Thus, the installation of a meteorological mast or development of a wind farm behind Wido Island is not highly recommended.

Keywords

References

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