• Journal of Advanced Marine Engineering and Technology
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• 제32권6호
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• pp.827-833
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• 2008

In this study, mathematical expressions based upon the conventional BEMT(blade element momentum theory) was applied to basic 100kW wind turbine blade configuration design. Power coefficient and related flow parameters, such as Prandtl's tip loss coefficient, tangential and axial flow induction factors of the wind turbine were analyzed systematically. X-FOIL was used to acquire lift and drag coefficients of the 2-D airfoils and Viterna-Corrigan formula was used o interpolate he aerodynamic characteristics in post-stall region. Also, aerodynamic characteristics, measured in a wind tunnel to calculate he power coefficient was applied. The comparative results such as axial and tangential flow factors, power coefficients were presented in this study. Power coefficient, calculated by in-house code was compared with the GH-Bladed result. The difference of the aerodynamic characteristics caused the difference of the performance characteristics as variation as TSR.

• 해양환경안전학회지
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• 제20권5호
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• pp.586-592
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• 2014

본 연구에서는 BEMT(Blade Element Momentum Theory)에 의해 우선 정격 출력 100 kW인 수평축 조류 발전용 단일 터빈에대한 기본 형상 설계를 진행하고, CFD 해석을 통해 블레이드 주변 유동특성 파악 및 출력 성능 예측을 하였다. 기본적인 에어포일은 FFA-W3-301, DU-93-W210, NACA-63418을 사용하였다. 이를 바탕으로 상반회전 터빈의 특성을 고찰한 결과, 설계 주속비 5.17에서 최대 출력계수는 0.495이며, 터빈의 출력은 101.82 kW를 얻었다.