500kW급 수평축 조류발전기의 수력 최적 설계
Hydrodynamically Optimal Blade Design for 500kW Class Horizontal Axis Tidal Current Turbine
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
A tidal current turbine is designed and analyzed numerically by using blade element momentum theory. The rated power has a limitation because the diameter of the tidal current turbine cannot exceed the depth of sea water. This study investigates a horizontal axis tidal-current turbine with a rated power of 500 kW. NACA-6 series laminar foil shape is used for basic airfoil along the blade span. The distributions of chord length and twist angle along the blade span are obtained from the hydrodynamic optimization procedure. Prandtl‘s tip loss correction and angle of attack correction considering the three-dimensional effect are applied for this study. The power coefficient curve shows maximum peak at the rated tip speed ratio of 6.0, and the maximum torque coefficient is developed at the tip speed ratio of 4. The drag coefficient reaches about 0.85 at the design tip speed ratio.
Abstract
A tidal current turbine is designed and analyzed numerically by using blade element momentum theory. The rated power has a limitation because the diameter of the tidal current turbine cannot exceed the depth of sea water. This study investigates a horizontal axis tidal-current turbine with a rated power of 500 kW. NACA-6 series laminar foil shape is used for basic airfoil along the blade span. The distributions of chord length and twist angle along the blade span are obtained from the hydrodynamic optimization procedure. Prandtl‘s tip loss correction and angle of attack correction considering the three-dimensional effect are applied for this study. The power coefficient curve shows maximum peak at the rated tip speed ratio of 6.0, and the maximum torque coefficient is developed at the tip speed ratio of 4. The drag coefficient reaches about 0.85 at the design tip speed ratio.
참고문헌 (11)
- 조철희, "조류발전 특성과 국내외 기술개발 동향", 한국태양에너지학회지, 6(1), pp.9~16 (2007)
- Development, Installation and Testing of a Large-Scale Tidal Current Turbine, , IT Power, ~, pp.T (2005), 06[DOI]
- Development of a Design Tool for Axial Flow Tidal Stream Devices, , Garrad Hassan and Partners Ltd, ~, pp.T (2008), 06[DOI]
- 해양에너지 실용화 기술개발(I): 조력·조류에너지, "염기대", 한국해양연구원, ~, pp.BSPM 0078-00-1347-2 (2001)
- Glauert, H., "Aerodynamic theory, Vol. IV. in: Division L, Airplane propeller, chapter XI" (1963), Dover Publication Inc.
- Aerodynamic performance of wind turbines, "Wilson, R. E.", Oregon State University, 1~126, pp.Research Report ERDA (1976), NSF[DOI]
- 유기완, "가변 피치형 수평축 풍력 터빈의 공력 최적설계 및 피치제어 성능 연구", 한국항공우주학회지, 35(10), pp.891~898 (2007), 한국항공우주학회
- Li, Y, "Modeling the Energy Output from an In-Stream Tidal Turbine Farm", J. of Computers, 4(4), pp.288~294 (2009)
- Clarke, J. A., "Design and testing of a Contra-Rotating Tidal Current Turbine", Proc. IMechE, Part A: Power and Energy, 통권 : 221, pp.171~179 (2007)
- Abott, I. H., "Theory of wing sections" (1959), Dover Publication Inc.
- Viterna, L. A., "Fixed Pitch Rotor Performance of Large Horizontal Axis Wind Turbines", Proceedings, Workshop on Large Horizontal Axis Wind Turbines, pp.69~85 (1981)