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Power extraction performance of three types of flapping hydrofoils at a Reynolds number of 1.7E6

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  • Sitorus, Patar Ebenezer
  • Ko, Jin Hwan

Abstract

This work focuses on the hydrodynamic performance analyses of three different types of flapping hydrofoils, in this case the pitch-heave (PH), left-swing (LS), and right-swing (RS) types, in their power extraction regimes via two dimensional CFD simulations. The power extraction performance is presented in an isocontour parametric map and is investigated from a comparison of the kinematics parameters and the development of unsteady vortices among the three types. It is found from the parametric analysis and comparison that the LS-type of flapping hydrofoil outperforms the PH and RS-types due to relatively high forces as well as the good synchronization of the forces and moment with the translational velocity and pitch angular rate, respectively upon the different aspects of the vortex development. Consequently, the power extraction performance improves from the LS to the PH and then to the RS-types. It is also recognized from another isocontour parametric map that the maximum power-extraction efficiency is achieved at a similar maximum effective angle of attack, at the maximum effective angle of attack rate, and at the maximum pitch angle rate for the LS and RS types, while the range of the maximum effective angle of attack rate is lower in the PH-type hydrofoil.

Suggested Citation

  • Sitorus, Patar Ebenezer & Ko, Jin Hwan, 2019. "Power extraction performance of three types of flapping hydrofoils at a Reynolds number of 1.7E6," Renewable Energy, Elsevier, vol. 132(C), pages 106-118.
    • Handle: RePEc:eee:renene:v:132:y:2019:i:c:p:106-118
    DOI: 10.1016/j.renene.2018.07.116
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    References listed on IDEAS

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    1. Rostami, Ali Bakhshandeh & Armandei, Mohammadmehdi, 2017. "Renewable energy harvesting by vortex-induced motions: Review and benchmarking of technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 70(C), pages 193-214.
    2. Xiao, Qing & Liao, Wei & Yang, Shuchi & Peng, Yan, 2012. "How motion trajectory affects energy extraction performance of a biomimic energy generator with an oscillating foil?," Renewable Energy, Elsevier, vol. 37(1), pages 61-75.
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    Cited by:

    1. Kim, Jihoon & Kim, Dong-Geon & Jung, Sejin & Moon, Seong Min & Ko, Jin Hwan, 2023. "Experimental study of a fully passive flapping hydrofoil turbine with a dual configuration and a coupling mechanism," Renewable Energy, Elsevier, vol. 208(C), pages 191-202.
    2. Arun Raj Shanmugam & Ki Sun Park & Chang Hyun Sohn, 2023. "Comparison of the Power Extraction Performance of an Oscillating Hydrofoil Turbine with Different Deflector Designs," Energies, MDPI, vol. 16(8), pages 1-29, April.
    3. Liu, Zhen & Qu, Hengliang & Shi, Hongda, 2020. "Energy-harvesting performance of a coupled-pitching hydrofoil under the semi-passive mode," Applied Energy, Elsevier, vol. 267(C).
    4. Liu, Zhen & Qu, Hengliang & Zhang, Guoliang, 2020. "Experimental and numerical investigations of a coupled-pitching hydrofoil under the fully-activated mode," Renewable Energy, Elsevier, vol. 155(C), pages 432-446.
    5. Benoît Genest & Guy Dumas, 2023. "Oscillating-Foil Turbine Performance Improvement by the Addition of Double Gurney Flaps and Kinematics Optimization," Energies, MDPI, vol. 16(6), pages 1-18, March.
    6. Boudreau, Matthieu & Picard-Deland, Maxime & Dumas, Guy, 2020. "A parametric study and optimization of the fully-passive flapping-foil turbine at high Reynolds number," Renewable Energy, Elsevier, vol. 146(C), pages 1958-1975.

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