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On the actual power coefficient by theoretical developing of the diffuser flange of wind-lens turbine

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  • Heikal, Hasim A.
  • Abu-Elyazeed, Osayed S.M.
  • Nawar, Mohamed A.A.
  • Attai, Youssef A.
  • Mohamed, Maged M.S.

Abstract

The wind-lens technology attracts extensive attention due to its promising performance. A numerical study was carried out to investigate the effects of diffuser flange inclination angle (φ) and the diffuser flange depth inside the exit of the diffuser (hi/Drotor) on the wind-lens turbine system performance. Besides, the effect of wind speed is taken into consideration. φ is changed through the range of −15° to 15° with a step of 5° in both forward and backward directions. Also, hi/Drotor is changed through the range of 0–0.06 with a step of 0.02 and wind speed of (8 and 10 m/s). A CFD model was developed and solved by using ANSYS FLUENT 16.2. Such model was validated by using previous published experimental results with good agreement and maximum deviation of 2.4%. It was found that the percentage increase of Cp at different values of φ was increased by augmenting of λ. Thus, it is emphasized that the maximum percentage increase of Cp of 28% was obtained at λ of 5.6 and φ of 10°. Moreover, a theoretical correction of Cp was performed to achieve that the actual power coefficient Cpact never exceeds Betz limit.

Suggested Citation

  • Heikal, Hasim A. & Abu-Elyazeed, Osayed S.M. & Nawar, Mohamed A.A. & Attai, Youssef A. & Mohamed, Maged M.S., 2018. "On the actual power coefficient by theoretical developing of the diffuser flange of wind-lens turbine," Renewable Energy, Elsevier, vol. 125(C), pages 295-305.
    • Handle: RePEc:eee:renene:v:125:y:2018:i:c:p:295-305
    DOI: 10.1016/j.renene.2018.02.100
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    1. Hashem, I. & Mohamed, M.H., 2018. "Aerodynamic performance enhancements of H-rotor Darrieus wind turbine," Energy, Elsevier, vol. 142(C), pages 531-545.
    2. Rocha, P.A. Costa & Rocha, H.H. Barbosa & Carneiro, F.O. Moura & Vieira da Silva, M.E. & Bueno, A. Valente, 2014. "k–ω SST (shear stress transport) turbulence model calibration: A case study on a small scale horizontal axis wind turbine," Energy, Elsevier, vol. 65(C), pages 412-418.
    3. Lanzafame, R. & Messina, M., 2010. "Power curve control in micro wind turbine design," Energy, Elsevier, vol. 35(2), pages 556-561.
    4. Liu, Jie & Song, Mengxuan & Chen, Kai & Wu, Bingheng & Zhang, Xing, 2016. "An optimization methodology for wind lens profile using Computational Fluid Dynamics simulation," Energy, Elsevier, vol. 109(C), pages 602-611.
    5. Sorribes-Palmer, F. & Sanz-Andres, A. & Ayuso, L. & Sant, R. & Franchini, S., 2017. "Mixed CFD-1D wind turbine diffuser design optimization," Renewable Energy, Elsevier, vol. 105(C), pages 386-399.
    6. Kardous, M. & Chaker, R. & Aloui, F. & Nasrallah, S. Ben, 2013. "On the dependence of an empty flanged diffuser performance on flange height: Numerical simulations and PIV visualizations," Renewable Energy, Elsevier, vol. 56(C), pages 123-128.
    7. Aranake, Aniket C. & Lakshminarayan, Vinod K. & Duraisamy, Karthik, 2015. "Computational analysis of shrouded wind turbine configurations using a 3-dimensional RANS solver," Renewable Energy, Elsevier, vol. 75(C), pages 818-832.
    8. 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.
    9. Singh, Ronit K. & Ahmed, M. Rafiuddin & Zullah, Mohammad Asid & Lee, Young-Ho, 2012. "Design of a low Reynolds number airfoil for small horizontal axis wind turbines," Renewable Energy, Elsevier, vol. 42(C), pages 66-76.
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