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Leading-edge serrations for performance improvement on a vertical-axis wind turbine at low tip-speed-ratios

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  • Wang, Zhenyu
  • Zhuang, Mei

Abstract

The performance of vertical-axis wind turbines (VAWTs) are substantially affected by the phenomenon of dynamic stall which is induced by the variations of angle of attack of rotating blades, especially at low tip-speed-ratios (TSRs). Large and sudden torque fluctuations are observed to take place when the dynamic stall vortices, formed near the blade leading-edge, are transported downstream. At low TSRs (λTSR<4) and relatively low Reynolds number (Re<105), dynamic stall occurs periodically during the rotation of turbine blades. This results in a sharp drop in lift coefficient and therefore rotor torque and power output are essentially reduced. The purpose of the present study is to investigate the concepts for improving the power performance of a conventional H-type VAWT model by implementing sinusoidal serrations on the leading-edge of turbine blades to control the dynamic flow separation at low TSRs. A thorough numerical study has been carried out to obtain the detailed flow fields for analysis and visualization. The power output results show that the improved turbine design with the sinusoidal serration profile of the wave amplitude h=0.025c and the wavelength λs=0.33c not only increases the power generation at low TSRs, but also enhances the capability of wind energy extraction at the optimal TSR in comparison to the baseline model. The flow separation is significantly controlled in the azimuth angle ranges from 75° to 160°, where the positive torque generation is also found to be considerably increased in the improved turbine model. Counter-rotating vortex pairs are generated due to the existence of serrations, which suppress the flow separation, especially in the regions near the peak-serration sections. Additionally, the lift coefficients illustrate a delay of occurrence of dynamic stall and a notable improvement of maximum lift in the improved wind turbine model in comparison to the baseline model. The effects of Reynolds number variation also reveal that the improved model would gain more benefits in power generation at low Reynolds number compared with that at high Reynolds number. The simulated results demonstrate that the leading-edge serration strategy could be an effective solution to control the dynamic stall in the operation of VAWTs.

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  • Wang, Zhenyu & Zhuang, Mei, 2017. "Leading-edge serrations for performance improvement on a vertical-axis wind turbine at low tip-speed-ratios," Applied Energy, Elsevier, vol. 208(C), pages 1184-1197.
    • Handle: RePEc:eee:appene:v:208:y:2017:i:c:p:1184-1197
    DOI: 10.1016/j.apenergy.2017.09.034
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    1. Rolland, S. & Newton, W. & Williams, A.J. & Croft, T.N. & Gethin, D.T. & Cross, M., 2013. "Simulations technique for the design of a vertical axis wind turbine device with experimental validation," Applied Energy, Elsevier, vol. 111(C), pages 1195-1203.
    2. Rezaeiha, Abdolrahim & Kalkman, Ivo & Blocken, Bert, 2017. "Effect of pitch angle on power performance and aerodynamics of a vertical axis wind turbine," Applied Energy, Elsevier, vol. 197(C), pages 132-150.
    3. Howell, Robert & Qin, Ning & Edwards, Jonathan & Durrani, Naveed, 2010. "Wind tunnel and numerical study of a small vertical axis wind turbine," Renewable Energy, Elsevier, vol. 35(2), pages 412-422.
    4. Andrea Alaimo & Antonio Esposito & Antonio Messineo & Calogero Orlando & Davide Tumino, 2015. "3D CFD Analysis of a Vertical Axis Wind Turbine," Energies, MDPI, vol. 8(4), pages 1-21, April.
    5. Danao, Louis Angelo & Eboibi, Okeoghene & Howell, Robert, 2013. "An experimental investigation into the influence of unsteady wind on the performance of a vertical axis wind turbine," Applied Energy, Elsevier, vol. 107(C), pages 403-411.
    6. Tescione, G. & Ragni, D. & He, C. & Simão Ferreira, C.J. & van Bussel, G.J.W., 2014. "Near wake flow analysis of a vertical axis wind turbine by stereoscopic particle image velocimetry," Renewable Energy, Elsevier, vol. 70(C), pages 47-61.
    7. Raciti Castelli, Marco & Englaro, Alessandro & Benini, Ernesto, 2011. "The Darrieus wind turbine: Proposal for a new performance prediction model based on CFD," Energy, Elsevier, vol. 36(8), pages 4919-4934.
    8. Chen, Wei-Hsin & Chen, Ching-Ying & Huang, Chun-Yen & Hwang, Chii-Jong, 2017. "Power output analysis and optimization of two straight-bladed vertical-axis wind turbines," Applied Energy, Elsevier, vol. 185(P1), pages 223-232.
    9. Rezaeiha, Abdolrahim & Kalkman, Ivo & Blocken, Bert, 2017. "CFD simulation of a vertical axis wind turbine operating at a moderate tip speed ratio: Guidelines for minimum domain size and azimuthal increment," Renewable Energy, Elsevier, vol. 107(C), pages 373-385.
    10. Almohammadi, K.M. & Ingham, D.B. & Ma, L. & Pourkashan, M., 2013. "Computational fluid dynamics (CFD) mesh independency techniques for a straight blade vertical axis wind turbine," Energy, Elsevier, vol. 58(C), pages 483-493.
    11. Yang, Min-Hsiung & Huang, Guan-Ming & Yeh, Rong-Hua, 2016. "Performance investigation of an innovative vertical axis turbine consisting of deflectable blades," Applied Energy, Elsevier, vol. 179(C), pages 875-887.
    12. Peter Bachant & Martin Wosnik, 2016. "Effects of Reynolds Number on the Energy Conversion and Near-Wake Dynamics of a High Solidity Vertical-Axis Cross-Flow Turbine," Energies, MDPI, vol. 9(2), pages 1-18, January.
    13. Kjellin, J. & Bülow, F. & Eriksson, S. & Deglaire, P. & Leijon, M. & Bernhoff, H., 2011. "Power coefficient measurement on a 12 kW straight bladed vertical axis wind turbine," Renewable Energy, Elsevier, vol. 36(11), pages 3050-3053.
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