Effect of the opening and location ratio on the performance of an H-Darrieus VAWT
Keywords:H-Darrius, Airfoil, ratio, CFD, NACA, Efficiency
Vertical axis wind turbines such as Darrieus turbines are a very interesting category of low wind speed domestic wind turbines. Further research work is needed to enhance their efficiency to fulfill the higher demand in small applications for power generation. The main objective of this work is to find a Darrieus turbine design to boost the starting capacity of the turbine through an opening located at the lower surface of the airfoil. We carried out a thorough CFD (Computational Fluid Dynamics) investigation to determine the impact of the opening position on the Darrieus rotor's output. This new type of airfoil uses a standard NACA 0015 profile and a profile with an opening on the lower surface of the profile. Different sizes of the opening in a symmetrical profile are evaluated through the CFD method to predict the Cp and CT of this H-Darrieus turbine design. Five sections were designed to describe the research of this new H-Darrieus rotor. Generally speaking, the results showed that the Cp decreases with the opening ratio, the desirable rotors with the lower surface opening ratio are 0.12 to 0.36 considering this with the low CpLP.
L. Pérez-Lombard, J. Ortiz, and C. Pout, “A review on buildings energy consumption information,” Energy and Buildings, vol. 40, no. 3, 2008. [Online]. Available: https://doi.org/10.1016/j.enbuild.2007.03.007
US Energy Information Administration, Annual Energy Outlook 2019 with projections to 2050. Washington, DC: U.S. Energy Information Administration (EIA), Ene. 24, 2019.
E. Hau, Wind Turbines: Fundamentals, Technologies, Application, Economics, 2nd ed. New York: Springer-Verlag Berlin Heidelberg, 2013.
S. Mertens, G. V. Kuik, and G. V. Bussel, “Performance of an H-Darrieus in the Skewed Flow on a Roof,” Journal of Solar Energy Engineering, vol. 125, no. 4, Nov. 26, 2006. [Online]. Available: https://doi.org/10.1115/1.1629309
I. Hashem and M. H. Mohamed, “Aerodynamic performance enhancements of H-rotor Darrieus wind turbine,” Energy, vol. 142, no. 19, Ene. 1, 2018. [Online]. Available: https://doi.org/10.1016/j.energy.2017.10.036
A. Fiedler, “The effects of blade pitch and mount point offset on vertical axis wind turbine performance,” PhD thesis, McMaster University, Hamilton, Ontario, Canadá, 2009.
P. C. Klimas and M. H. Worstell. (1981, Oct.) Effects of blade preset pitch/offset on curved-blade Darrieus vertical axis wind turbine performance. [Online]. Available: https://www.osti.gov/biblio/5243044
R. H. Liebeck, “Design of subsonic airfoils for high lift,” Journal of Aircraft, vol. 15, no. 9, Sep. 1970. [Online]. Available: https://doi.org/10.2514/3.58406
D. H. Neuhart and O. C. Pendergraft, A Water Tunnel Study of Gurney Flaps. Washington: NASA TM-4071, 1988.
D. Srivastav and K. N. Ponnani, “Surface Modifications for Improved Maneuverability and Performance of an Aircraft,” in ASME 2011 International Mechanical Engineering Congress and Exposition. Volume 1: Advances in Aerospace Technology; Energy Water Nexus; Globalization of Engineering; Posters. Denver, Colorado: American Society of Mechanical Engineers, 2011, pp. 121–127.
M. F. Ismail and K. Vijayaraghavan, “The effects of aerofoil profile modification on a vertical axis wind turbine performance,” Energy, vol. 80, Feb. 1, 2015. [Online]. Available: https://doi.org/10.1016/j.energy.2014.11.034
M. R. Castelli, A. Englaro, and E. Benini, “The Darrieus wind turbine: Proposal for a new performance prediction model based on CFD,” Energy, vol. 36, no. 8, Ago. 2011. [Online]. Available: https://doi.org/10.1016/j.energy.2011.05.036
C. S. Ferreira, G. V. Bussel, and G. V. Kuik, “2D CFD simulation of dynamic stall on a vertical axis wind turbine : verification and validation with PIV measurements,” in 45th AIAA Aerospace Sciences Meeting, Reno, Nevada, 2007, pp. 16 192–16 201.
M. Islam, D. S.-K. Ting, and A. Fartaj, “Aerodynamic models for Darrieus-type straight-bladed vertical axis wind turbines,” Renewable and Sustainable Energy Reviews, vol. 12, no. 4, May. 2008. [Online]. Available: https://doi.org/10.1016/j.rser.2006.10.023
M. Islam, M. R. Amin, D. S. K. Ting, and A. Fartaj, “Performance Analysis of a Smaller-Capacity Straight-Bladed VAWT with Prospective Airfoils,” in 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, 2008.
F. R. Menter, “Two-equation eddy-viscosity turbulence models for engineering applications,” AIAA Journal, vol. 32, no. 8, Ago. 1994. [Online]. Available: https://doi.org/10.2514/3.12149
J. Smagorinsky, “General circulation experiments with the primitive equations,” Monthly Weather Review, vol. 91, no. 3, Mar. 1, 1963. [Online]. Available: https://doi.org/10.1175/1520-0493(1963)091<0099:GCEWTP>2.3.CO;2
W. Szablewski, “B. E. Launder and D. B. Spalding, Mathematical Models of Turbulence. 169 S. m. Abb. London/New York 1972. Academic Press. Preis geb. $ 7,50,” Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, vol. 53, no. 6, 1973. [Online]. Available: https://doi.org/10.1002/zamm.19730530619
K. W. McLaren, “A numerical and experimental study of unsteady loading of high solidity vertical axis wind turbines,” PhD thesis, McMaster University, Hamilton, Ontario, Canadá, 2011.
C. Zhang, C. P. Bounds, L. Foster, and M. Uddin, “Turbulence Modeling Effects on the CFD Predictions of Flow over a Detailed Full-Scale Sedan Vehicle,” Fluids, vol. 4, no. 3, Ago. 1, 2019. [Online]. Available: https://doi.org/10.3390/fluids4030148
P. A. Durbin, “Near-wall turbulence closure modeling without “damping functions”,” Theoretical and Computational Fluid Dynamics, vol. 3, no. 1, Sep. 1991. [Online]. Available: https://doi.org/10.1007/BF00271513
S. Takahashi, Y. Ohya, T. Karasudani, and K. Watanabe, “Numerical and experimental studies of airfoils suitable for vertical axis wind turbines and an application of wind-energy collecting structure for higher performance,” Journal of Wind Engineering, vol. 108, 2006. [Online]. Available: https://bit.ly/3ijtSaC
R. Gupta, A. Biswas, and K. K. Sharma, “Comparative study of a three-bucket Savonius rotor with a combined three-bucket Savonius–three-bladed Darrieus rotor,” Renewable Energy, vol. 33, no. 9, Sep. 2008. [Online]. Available: https://doi.org/10.1016/j.renene.2007.12.008
R. Howell, N. Qin, J. Edwards, and N. Durrani, “Wind tunnel and numerical study of a small vertical axis wind turbine,” Renewable Energy, vol. 35, no. 2, Feb. 2010. [Online]. Available: https://doi.org/10.1016/j.renene.2009.07.025
E. Amet, T. Maitre, C. Pellone, and J.-L. Achard, “2D Numerical Simulations of Blade-Vortex Interaction in a Darrieus Turbine,” J. Fluids Eng., vol. 131, no. 11, Oct. 21, 2009. [Online]. Available: https://doi.org/10.1115/1.4000258
K. M. Almohammadi, D.B.Ingham, L. Ma, and M.Pourkashan, “Computational fluid dynamics (CFD) mesh independency techniques for a straight blade vertical axis wind turbine,” Energy, vol. 58, Sep. 1, 2013. [Online]. Available: https://doi.org/10.1016/j.energy.2013.06.012
N. Hill, R. Dominy, G. Ingram, and J. Dominy, “Darrieus turbines: The physics of self-starting,” Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol. 223, no. 1, 2009. [Online]. Available: https://doi.org/10.1243/09576509JPE615
R. Dominy, P. Lunt, A. Bickerdyke, and J. Dominy, “Self-starting capability of a Darrieus turbine,” Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol. 221, no. 1, Feb. 1, 2017. [Online]. Available: https://doi.org/10.1243/09576509JPE340
How to Cite
Revista Facultad de Ingeniería, Universidad de Antioquia is licensed under the Creative Commons Attribution BY-NC-SA 4.0 license. The material published in the journal can be distributed, copied and exhibited by third parties if the respective credits are given to the journal. No commercial benefit can be obtained and derivative works must be under the same license terms as the original work.