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Upgrading a Shrouded Wind Turbine with a Self-Adaptive Flanged Diffuser

Author

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  • Jun-Feng Hu

    (Department of Aeronautics and Astronautics, Engineering School, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, Japan)

  • Wen-Xue Wang

    (Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan)

Abstract

In this paper, a self-adaptive flange is proposed for the wind turbine shrouded by a flanged diffuser to reduce the wind loads acting on the flanged diffuser at high wind velocities. The self-adaptive flange can maintain the advantages of the flanged diffuser at wind velocities lower than the rated velocity and reduce the wind loads acting on the diffuser and blades at higher wind velocities. Numerical analyses of fluid-structure interactions are carried out to investigate the flow field around the diffuser with a self-adaptive flange and the variation of wind load acting on the diffuser due to the reconfiguration of the self-adaptive flange at various wind velocities. Numerical results show that the wind load acting on the total flanged diffuser can be reduced by about 35% at 60 m/s due to the reconfiguration of the self-adaptive flange.

Suggested Citation

  • Jun-Feng Hu & Wen-Xue Wang, 2015. "Upgrading a Shrouded Wind Turbine with a Self-Adaptive Flanged Diffuser," Energies, MDPI, vol. 8(6), pages 1-19, June.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:6:p:5319-5337:d:50609
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    References listed on IDEAS

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    1. Wang, Wen-Xue & Matsubara, Terutake & Hu, Junfeng & Odahara, Satoru & Nagai, Tomoyuki & Karasutani, Takashi & Ohya, Yuji, 2015. "Experimental investigation into the influence of the flanged diffuser on the dynamic behavior of CFRP blade of a shrouded wind turbine," Renewable Energy, Elsevier, vol. 78(C), pages 386-397.
    2. Bai, X. & Avital, E.J. & Munjiza, A. & Williams, J.J.R., 2014. "Numerical simulation of a marine current turbine in free surface flow," Renewable Energy, Elsevier, vol. 63(C), pages 715-723.
    3. Bet, F & Grassmann, H, 2003. "Upgrading conventional wind turbines," Renewable Energy, Elsevier, vol. 28(1), pages 71-78.
    4. Yuji Ohya & Takashi Karasudani, 2010. "A Shrouded Wind Turbine Generating High Output Power with Wind-lens Technology," Energies, MDPI, vol. 3(4), pages 1-16, March.
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    Cited by:

    1. Nunes, Matheus M. & Brasil Junior, Antonio C.P. & Oliveira, Taygoara F., 2020. "Systematic review of diffuser-augmented horizontal-axis turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
    2. Keramat Siavash, Nemat & Najafi, G. & Tavakkoli Hashjin, Teymour & Ghobadian, Barat & Mahmoodi, Esmail, 2020. "Mathematical modeling of a horizontal axis shrouded wind turbine," Renewable Energy, Elsevier, vol. 146(C), pages 856-866.
    3. Saleem, Arslan & Kim, Man-Hoe, 2019. "Performance of buoyant shell horizontal axis wind turbine under fluctuating yaw angles," Energy, Elsevier, vol. 169(C), pages 79-91.
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    5. Saleem, Arslan & Kim, Man-Hoe, 2020. "Aerodynamic performance optimization of an airfoil-based airborne wind turbine using genetic algorithm," Energy, Elsevier, vol. 203(C).

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