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Aerodynamic assessment of airfoils for use in small wind turbines

  • Okita, Willian M. (Faculty of Mechanical Engineering, Energy Department, State University of Campinas) ;
  • Ismail, Kamal A.R. (Faculty of Mechanical Engineering, Energy Department, State University of Campinas)
  • 투고 : 2019.02.05
  • 심사 : 2019.03.30
  • 발행 : 2019.03.25

초록

A successful blade design must satisfy some criterions which might be in conflict with maximizing annual energy yield for a specified wind speed distribution. These criterions include maximizing power output, more resistance to fatigue loads, reduction of tip deflection, avoid resonance and minimize weight and cost. These criterions can be satisfied by modifying the geometrical parameters of the blade. This study is dedicated to the aerodynamic assessment of a 20 kW horizontal axis wind turbine operating with two possible airfoils; that is $G{\ddot{o}}ttingen$ 413 and NACA 2415 airfoils (the Gottingen airfoil never been used in wind turbines). For this study parameters such as chord (constant, tapered and elliptic), twist angle (constant and linear) are varied and applied to the two airfoils independently in order to determine the most adequate blade configuration that produce the highest annual energy output. A home built numerical code based on the Blade Element Momentum (BEM) method with both Prandtl tip loss correction and Glauert correction, X-Foil and Weibull distribution is developed in Matlab and validated against available numerical and experimental data. The results of the assessment showed that the NACA 2415 airfoil section with elliptic chord and constant twist angle distributions produced the highest annual energy production.

키워드

참고문헌

  1. Bai, C. and Wang, W. (2016), "Review of computational and experimental approaches to analysis of aerodynamic performance in horizontal-axis wind turbines (HAWTs)", Renew. Sust. Energy, 63, 506-519. https://doi.org/10.1016/j.rser.2016.05.078
  2. Burton, T. (2001), Wind Energy Handbook, John Wiley & Sons Ltd, Chichester, U.K.
  3. Capellaro, M. and Cheng, P. (2014), "An iterative method to optimize the twist angle of a wind turbine rotor blade", Wind Eng., 38(5), 489-498. https://doi.org/10.1260/0309-524X.38.5.489
  4. Ceyhan, O. (2008), "Aerodynamic design and optimization of horizontal axis wind turbines by using BEM theory and genetic algoritm", M.Sc. Dissertation, Middle East Technical University, Ankara, Turkey.
  5. Chehouri, A., Younes, R., Ilinca, A. and Perron, J. (2015), "Review of performance optimization techniques applied to wind turbines", Appl. Energy, 142, 361-388. https://doi.org/10.1016/j.apenergy.2014.12.043
  6. De Vries, O. (1979), Fluid Dynamic Aspects of Wind Energy Conversion, AGARD Report AG-243, 1-50.
  7. Glauert, H (1935), Airplane Propellers in Aerodynamic Theory. Springer, Berlin, Dover Publications, Inc., New York, U.S.A., 251-269.
  8. Gupta, R.K., Warudkar, V., Purohit, R. and Rajpurohitc, S.S. (2017), "Modeling and aerodynamic analysis of small scale, mixed airfoil horizontal axis wind turbine blade", Mater. Today Proc., 4(4), 5370-5384. https://doi.org/10.1016/j.matpr.2017.05.049
  9. Hand, M.M., Simms, D.A., Fingersh, L.J., Jager, D.W., Cotrell, J.R., Schreck, S. and Larwood, S.M. (2001), Unsteady Aerodynamics Experiment Phase VI: Wind Tunnel Test Configurations and Available Data Campaigns National Renewable Energy Laboratory, Colorado, U.S.A.
  10. Hansen, M.O.L. (2008), Aerodynamics of Wind Turbines, Earthscan, London, U.K.
  11. Hassanzadeh, A., Hassanabad, A. and Dadvand, A. (2016), "Aerodynamic shape optimization and analysis of small wind turbine blades employing the Viterna approach for post-stall region", Alexandria Eng. J., 55(3), 2035-2043. https://doi.org/10.1016/j.aej.2016.07.008
  12. Hau, E. (2006), Wind Turbine, Fundamentals, Technologies, Application, Economics, Springer, Berlin, Germany.
  13. Hernandez, J. and Crespo, A. (1987), "Aerodynamic calculation of the performance of horizontal axis wind turbines and comparison with experimental result", Wind Eng., 11(4), 77-187.
  14. Jonkman, J., Butterfield, S., Musial, W. and Scott, G. (2009), Definition of a 5-MW Reference Wind Turbine for Offshore System Development, National Renewable Energy Lab.(NREL), Golden, Colorado, U.S.A.
  15. Karthikeyan, N. and Suthakar, T. (2016), "Computational studies on small wind turbine performance characteristics", Proceedings of the 27th IUPAP Conference on Computational Physics (CCP2015), Guwahati, India, December.
  16. Karthikeyan, N., Murugavel, K.K., Kumar, S.A. and Rajakumar, S. (2015), "Review of aerodynamic developments on small horizontal axis wind turbine blade", J. Renew. Sust. Energy, 42, 801-822. https://doi.org/10.1016/j.rser.2014.10.086
  17. Liu, X., Wang, L. and Tang, X. (2013), "Optimized linearization of chord and twist angle profiles for fixedpitch fixed-speed wind turbine blades", Renew. Energy, 57, 111-119. https://doi.org/10.1016/j.renene.2013.01.036
  18. Maniaci, D. and Schmitz, S. (2016), "Extended glauert tip correction to include vortex rollup effects", J. Phys. Conf. Ser., 753(2).
  19. Messina, L.M. (2007), "Fluid dynamics wind turbine design: Critical analysis, optimization and application of BEM theory", Renew. Energy, 32(14), 2291-2305. https://doi.org/10.1016/j.renene.2006.12.010
  20. Okita, W.M. Ismail, K.A.R. and Moura, L.F.M. (2018), "Aerodynamic performance and annual energy production of small horizontal axis windmill using different airfoils", Proceedings of the International Conference on Rotor Dynamics, Rio de Janeiro, Brazil, September.
  21. Olczak, A., Stallard, T., Feng, T. and Stansby, P.K. (2016), "Comparison of a RANS blade element model for tidal turbine arrays with laboratory scale measurements of wake velocity and rotor thrust", J. Fluids Struct., 64, 87-106. https://doi.org/10.1016/j.jfluidstructs.2016.04.001
  22. Purushothaman, M., Valarmathi, T.N. and Praneeth, S. (2016), "Selection of twist and chord distribution of horizontal axis wind turbine in low conditions", IOP Conf. Ser. Mater. Sci. Eng., 149(1).
  23. Rocha, P.A.C., Araujo, J.W.C., Lima, R.J.P., Silva, M.E.V., Albiero, D., Andrade, C.F. and Carneiro, F.O.M. (2018), "The effects of blade pitch angle on the performance of small-scale wind turbine in urban environments", Energy, 148, 169-178, https://doi.org/10.1016/j.energy.2018.01.096
  24. Sahin, A.Z., Al-Garni, A.Z. and Al-Farayedhi, A. (2001), "Analysis of a small horizontal axis wind turbine performance", Int. J. Energy Res., 25(6), 501-506. https://doi.org/10.1002/er.699
  25. Schubel, P.J. and Crossley, R.J. (2012), "Wind turbine blade fesign", Energies, 5(9), 3425-3449. https://doi.org/10.3390/en5093425
  26. Sharifi, A. and Nobari, M.R.H. (2013), "Prediction of optimum section pitch angle distribution along wind turbine blades", Energy Convers. Manage., 67, 342-350. https://doi.org/10.1016/j.enconman.2012.12.010
  27. Shen, W.Z., Mikkelsen, R., Sorensen, J.N. and Bak, C. (2005), "Tip loss corrections for wind turbine computations", Wind Energy, 8(4), 457-475. https://doi.org/10.1002/we.153
  28. Shen, X., Yang, H., Chen, J., Zhu, X. and Du, Z. (2016), "Aerodynamic shape optimization of non-straight small wind turbine blades", Energy Convers. Manage., 119, 266-278. https://doi.org/10.1016/j.enconman.2016.04.008
  29. Singh, R.K., Ahmeda, M.R., Zullahb, M.A. and Lee, Y. (2012), "Design of a low reynolds number airfoil for small horizontal axis wind turbines", Renew. Energy, 42, 66-76. https://doi.org/10.1016/j.renene.2011.09.014
  30. Sudhamshu, A.R., Pandey, M.C., Sunil, N., Satish, N.S., Mugundhan, V. and Velamati, R.K. (2016), "Numerical study of effect of pitch angle on performance characteristics of a HAWT", Eng. Sci. Technol. Int., 19(1), 632-641. https://doi.org/10.1016/j.jestch.2015.09.010
  31. Tahani, M., Maeda, T., Babayan, N., Mehrnia, S., Shadmehri, M., Lib, Q., Fahimia, R. and Masdari, M. (2017), "Investigating the effect of geometrical parameters of an optimized wind turbine blade in turbulent flow", Energy Convers. Manage., 153, 71-82. https://doi.org/10.1016/j.enconman.2017.09.073
  32. Tang, X., Huang, X., Peng, R. and Liu, X. (2015), "A direct approach of design optimization for small horizontal axis wind turbine blades", Procedia CIRP, 36, 12-16. https://doi.org/10.1016/j.procir.2015.01.047
  33. Tummala, A., Velamati, R.K., Sinha, D.K., Indraja, V. and Krishna, V.H. (2016), "A review on small scale wind turbines", Renew. Sust. Energy, 56, 1351-1371. https://doi.org/10.1016/j.rser.2015.12.027
  34. Vaz, J R.P., Pinho, J.T. and Mesquita, A.L A. (2011), "An extension of BEM method applied to horizontal-axis wind turbine design", Renew. Energy, 36(6), 1734-1740. https://doi.org/10.1016/j.renene.2010.11.018
  35. Vaz, J.R.P. and Wood, D.H. (2016), "Aerodynamic optimization of the blades of diffuser-augmented wind turbines", Energy Convers. Manage., 123, 35-45. https://doi.org/10.1016/j.enconman.2016.06.015
  36. Wang, L., Tang, X. and Liu, X., (2012), "Optimized chord and twist angle distributions of wind turbine blade considering Reynolds number effects", Proceedings of the International Conference on Wind Energy: Materials, Engineering and Policies, Hyderabad, India, November.
  37. Wilson, R.E. and Lissaman, P.B.S. (1974), "Applied aerodynamics of wind power machines", Oregon State University Report NSF/RA/N-74113.
  38. Wind Energy Atlas of the State of Sao Paulo (2012), Secretary of Energy of the State of Sao Paulo, Sao Paulo, Brazil.