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Mixed CFD-1D wind turbine diffuser design optimization

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  • Sorribes-Palmer, F.
  • Sanz-Andres, A.
  • Ayuso, L.
  • Sant, R.
  • Franchini, S.

Abstract

A method to design a diffuser augmented wind turbine (DAWT) is proposed, using as a guiding point the optimal pressure drop at the turbine. The use of concepts and expressions derived from a 1D analytic model helped to reduce the number of computational fluid dynamics simulations needed to find the optimal configuration. The proposed configuration can extract energy from the flow with the same efficiency as the state-of-the-art shrouded wind turbine (SWT) configurations but generating a significantly smaller wake, which makes this configuration a good candidate for wind farms or tidal applications. Furthermore, as a product of the 1D model, universal curves for the power coefficient have been obtained, as a function of the thrust coefficient, or disk loading, which have been compared with numerical and experimental results, showing a good agreement. Finally, the maximum ideal power coefficient has been found for a given configuration, which helps to estimate the margin for improvement of an actual design.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:105:y:2017:i:c:p:386-399
    DOI: 10.1016/j.renene.2016.12.065
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    Cited by:

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    2. Leloudas, Stavros N. & Lygidakis, Georgios N. & Eskantar, Alexandros I. & Nikolos, Ioannis K., 2020. "A robust methodology for the design optimization of diffuser augmented wind turbine shrouds," Renewable Energy, Elsevier, vol. 150(C), pages 722-742.
    3. Vaz, Jerson R.P. & Wood, David H., 2018. "Effect of the diffuser efficiency on wind turbine performance," Renewable Energy, Elsevier, vol. 126(C), pages 969-977.
    4. 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).
    5. 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.
    6. Rahmatian, Mohammad Ali & Hashemi Tari, Pooyan & Mojaddam, Mohammad & Majidi, Sahand, 2022. "Numerical and experimental study of the ducted diffuser effect on improving the aerodynamic performance of a micro horizontal axis wind turbine," Energy, Elsevier, vol. 245(C).
    7. 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.
    8. Kaseb, Z. & Montazeri, H., 2022. "Data-driven optimization of building-integrated ducted openings for wind energy harvesting: Sensitivity analysis of metamodels," Energy, Elsevier, vol. 258(C).
    9. Kumar, Vedant & Saha, Sandeep, 2019. "Theoretical performance estimation of shrouded-twin-rotor wind turbines using the actuator disk theory," Renewable Energy, Elsevier, vol. 134(C), pages 961-969.
    10. Dogru, Safak & Yilmaz, Oktay, 2024. "Extensive design and aerodynamic performance investigation of diffuser augmented wind turbine (DAWT) guided by generalized actuator disc theory," Renewable and Sustainable Energy Reviews, Elsevier, vol. 192(C).
    11. Bontempo, R. & Manna, M., 2020. "Diffuser augmented wind turbines: Review and assessment of theoretical models," Applied Energy, Elsevier, vol. 280(C).

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