Czasopismo
2008
|
Vol. 13, no 2
|
359-372
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Języki publikacji
Abstrakty
This paper investigates the boundary-layer characteristics of a wind turbine blade of small chord length. The three-dimensional form of momentum integral equations is derived and used to predict the boundary-layer growth and limiting streamline angles on the blade surface for both attached and separating flow. The chordwise skin friction coefficient is used to identify boundary layer separation and shear layer reattachment locations. The nature of flow near the axis of rotation is discussed and the physical mechanism associated with 3-D and rotational effects is identified. A semi-empirical correction law for the lift coefficient based on 2-D airfoil data is established. Comparing calculated and measured lift curves of a stall controlled wind turbine, it is shown that the proposed correction law may improve significantly the accuracy of the predictions.
Rocznik
Tom
Strony
359-372
Opis fizyczny
Bibliogr. 18 poz., tab., wykr.
Twórcy
autor
autor
- Institute of Statistics and Applied Mathematics of the Romanian Academy P.O. Box 1-24, RO-70700, Bucharest, ROMANIA, v_cardos@yahoo.ca
Bibliografia
- Banks W.H. and Gadd G.E. (1962): A preliminary report on boundary layers on screw propellers and simpler rotating bodies.- National Physical Laboratory Ship. Div. Rept. SH R27/62.
- Chaviarropoulos P.K. and Hansen M.O.L. (2000): Investigating three-dimensional and rotational effects on wind turbines blades by means of a quasi-3D Navier-Stokes solver.- Journal of Fluids Engineering, vol.122, pp.330-336.
- Dallmann V. (1983): Topological structures of three-dimensional vortex separation.- AIAA-83-1735.
- Du Z. and Seling M.S. (2000): The effect of rotation on the boundary layer of a wind turbine blade.- Renewable Energy, vol.20, pp.167-182.
- Dumitrescu H., Alexandrescu M. and Alexandrescu N. (2005): Boundary layer state and flow field structure on wind turbine blades. ( Proceedings of the Romanian Academy, vol.6, No.3, pp.219-228.
- Dumitrescu H. and Cardos V. (2004): Rotational effects on the boundary-layer flow in wind turbines.- AIAA Journal, vol.42, No.2, pp.408-411.
- Fogarty L.E. (1951): The laminar boundary layer on a rotating blade. (Journal of Aeronautical Sciences, vol.18, No.4, pp.247-253.
- Horlock J.H. and Wordsworth J. (1965): The thre-dimensional laminar boundary layer on a rotating helical blade. - Journal of Fluid Mechanics, vol.23, pp.305-321.
- Mager A. (1952): Generalization of the boundary layer momentum integral equations to three dimensional flows including those of rotating systems. (NACA Report 1067.
- Miyake Y. and Fujita S. (1974): A laminar boundary-layer on a rotating three-dimensional blade.- Journal of Fluid Mechanics, vol.65, pp.481-498.
- Perry A.E. and Chong M.S. (1985): Local solutions of the Navier-Stokes equations in separated flows.- Third Symp. on Numerical and Physical Aspects of Aerodynamics Flows, January, Long Beach California, pp.21-24.
- Schreck S. and Robinson M. (2002): Rotational augmentation of horizontal axis wind turbine blade aerodynamic response. (Wind Energy vol.5, No.2/3, pp.133-150.
- Schreck S. and Robinson M. (2003): Boundary layer state and flow field structure underlying rotational augmentation of blade aerodynamic response. (Journal of Solar Energy Engineering (ASME), vol.125, pp.448-456.
- Sears W.R. (1950): Potential flow around a rotating cylindrical blade. (Journal of Aeronautical Sciences, vol.17, No.3, pp.183-184.
- Shen W.Z. and Sorensen J.N. (1999): Quasi-3D Navier-Stokes model for a rotating airfoil.- Journal of Computational Physics, vol.150, pp.518-548.
- Snel H. (1990): Scaling laws for the boundary layer flow on rotating wing turbine blades.- Proceedings of the 4th IEA Symposion on the Aerodynamics of Wind Turbines Rome.
- Snel H., Houwink R. and Bosscher T. (1994): Sectional prediction of lift coefficients on rotating wind turbine blades in stall.- ECN Report: ECN-C-93-052.
- Tangler J.L. (2004): Insight into wind turbine stall and post-stall aerodynamics. - Wind Energy, vol.7, pp.247-260.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0036-0004