Reynolds Number and Drag Influences on Large Horizontal Axis Wind Turbine Design
Keywords:
Reynolds number, Drag, Air density, Aerodynamic performanceAbstract
The aerodynamic design of large wind turbines involves many factors, the most important of which are Reynolds number, drag and air density. This paper discusses the influence of these factors on the aerodynamic performance of a large horizontal axis wind turbine covering the drag term in the theoretical analysis. The drag term complicates the system of resolution for the axial and tangential induction factors. Previous work (Mingwei Ge) simplified this system by taking approximations for the axial and tangential induction factors. To make the analysis more general, the nonlinear equation system with the axial and tangential induction factors is solved. In the first step, the effect of Reynolds numberis studied for the DU00-W-350 blade profile though three values,,.Increasing the Reynolds number improves both the torque in the outer section of the blade and the power coefficient along the blade. In the next step, the effect of drag is examined using a comparison between the blade without drag and the blade with drag for the DU00-W-350 and NACA64618 profiles. It is found that a blade profile with lower drag gives higher torque and power coefficient than a blade profile with higher drag. In addition, the air density affects the torque and power coefficient of the NACA64618 blade profile. The simulation of this work is compared to previous work in the literature.
References
W. Xudong, W. Z. Shen, W. J. Zhu, and C. Jin, “Shape Optimization of Wind Turbine Blades,” Wind Energy, vol. 12, no. 8, pp. 781–803, 2009.
J. Johansen, H. A. Madsen, M. Gaunaa, and C. Bak, “Design of a Wind Turbine Rotor for Maximum Aerodynamic Efficiency,” Wind Energy, vol. 12, pp. 261–273, 2009.
E. Benini and A. Toffolo, “Optimal Design of Horizontal-Axis Wind Turbines Using Blade-Element Theory and Evolutionary Computation,” J. Sol. Energy Eng., vol. 124, no. 4, pp. 357–363, 2002.
P. Fuglsang and H. A. Madsen, “Optimization method for wind turbine rotors,” J. Wind Eng. Ind. Aerodyn., vol. 80, pp. 191–206, 1999.
J. Jonkman, S. Butterfield, W. Musial, and G. Scott, “Definition of a 5-MW Reference Wind Turbine for Offshore System Development,” Natl. Renew. Energy Lab, no. NREL/TP-500-38060, 2009.
G. Marsh, “Offshore reliability,” Renew. Energy Focus, vol. 13, no. 3, pp. 62–65, 2012.
M. Ge, D. Ph, D. Tian, D. Ph, and Y. Deng, “Reynolds Number Effect on the Optimization of a Wind Turbine Blade for Maximum Aerodynamic Efficiency,” J. Energy Eng., 2014.
M. Drela, “XFOIL: An Analysis and Design System for Low Reynolds Number Airfoils,” Low Reynolds Number Aerodyn., pp. 1–12, 1989.
C. Bak, “Sensitivity of Key Parameters in Aerodynamic Wind Turbine Rotor Design on Power and Energy Performance,” J. Phys. Conf. Ser., vol. 75, 2007.
W. A. Timmer and R. P. J. O. M. van Rooij, “Summary of the Delft University Wind Turbine Dedicated Airfoils,” J. Sol. Energy Eng., vol. 125, pp. 488–496, 2003.
O. Ceyhan, “Towards 20MW Wind Turbine?: High Reynolds Number Effect on Rotor Design,” 50th AIAA ASM Conf. Nashville, Tennessee, 2012.
O. De Vries, “On the theory of the horizontal-axis wind turbine,” Annu. Rev. Fluid Mech., vol. 15, no. 1, pp. 77–96, 1983.
P. J. Moriarty, “AeroDyn Theory Manual,” Natl. Renew. Energy Lab, no. NREL/TP-500-36881, 2005.
T. Burton, N. Jenkins, D. Sharpe, and E. Bossayni, Wind Energy Handbook, Second Edi. Chichester, England: John Wiley & Sons, Ltd, 2011.
J. G. M. J.F.Manwell, Wind Energy Explaind ,Theory, Design and Application, Second Edi. Chichester, United Kingdom: John Wiley & Sons, Ltd, 2010.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 International Journal of Applied Sciences: Current and Future Research Trends
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who submit papers with this journal agree to the following terms.
