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Wake characteristics of a TriFrame of axial-flow hydrokinetic turbines

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  • Chawdhary, Saurabh
  • Hill, Craig
  • Yang, Xiaolei
  • Guala, Michele
  • Corren, Dean
  • Colby, Jonathan
  • Sotiropoulos, Fotis

Abstract

An effective way to develop arrays of hydrokinetic turbines in river and tidal channels is to arrange them in TriFrame™ 1 configurations where three turbines are mounted together at the apexes of a triangular frame. This TriFrame can serve as a building block for rapidly deploying multi-turbine arrays. The wake structure of a TriFrame of three model turbines is investigated using both numerical simulations and experiments. In the numerical part, we employ large-eddy simulation (LES) with the curvilinear immersed boundary method (CURVIB) for fully resolving the turbine geometry details to simulate intra-turbine wake interactions in the TriFrame configuration. First, the computed results are compared with the experiments in terms of mean flow and turbulence characteristics with overall good agreement. The flow-fields are then analyzed to elucidate the mechanisms of turbine interactions and wake evolution in the TriFrame configuration. We found that the wake of the upstream TriFrame turbine exhibits unique characteristics indicating presence of the Venturi effect as the wake encounters the two downstream turbines. We finally compare the wakes of the TriFrame turbines with that of an isolated single turbine wake to further illustrate how the TriFrame configuration affects the wake characteristics and power production in an array of TriFrames.

Suggested Citation

  • Chawdhary, Saurabh & Hill, Craig & Yang, Xiaolei & Guala, Michele & Corren, Dean & Colby, Jonathan & Sotiropoulos, Fotis, 2017. "Wake characteristics of a TriFrame of axial-flow hydrokinetic turbines," Renewable Energy, Elsevier, vol. 109(C), pages 332-345.
    • Handle: RePEc:eee:renene:v:109:y:2017:i:c:p:332-345
    DOI: 10.1016/j.renene.2017.03.029
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    References listed on IDEAS

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    Cited by:

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    5. Musa, Mirko & Hill, Craig & Guala, Michele, 2019. "Interaction between hydrokinetic turbine wakes and sediment dynamics: array performance and geomorphic effects under different siting strategies and sediment transport conditions," Renewable Energy, Elsevier, vol. 138(C), pages 738-753.
    6. Yang, Xiaolei & Pakula, Maggie & Sotiropoulos, Fotis, 2018. "Large-eddy simulation of a utility-scale wind farm in complex terrain," Applied Energy, Elsevier, vol. 229(C), pages 767-777.
    7. Faizan, Muhammad & Badshah, Saeed & Badshah, Mujahid & Haider, Basharat Ali, 2022. "Performance and wake analysis of horizontal axis tidal current turbine using Improved Delayed Detached Eddy Simulation," Renewable Energy, Elsevier, vol. 184(C), pages 740-752.
    8. Vinod, Ashwin & Banerjee, Arindam, 2019. "Performance and near-wake characterization of a tidal current turbine in elevated levels of free stream turbulence," Applied Energy, Elsevier, vol. 254(C).
    9. Vinod, Ashwin & Han, Cong & Banerjee, Arindam, 2021. "Tidal turbine performance and near-wake characteristics in a sheared turbulent inflow," Renewable Energy, Elsevier, vol. 175(C), pages 840-852.
    10. Jiyong Lee & Mirko Musa & Chris Feist & Jinjin Gao & Lian Shen & Michele Guala, 2019. "Wake Characteristics and Power Performance of a Drag-Driven in-Bank Vertical Axis Hydrokinetic Turbine," Energies, MDPI, vol. 12(19), pages 1-20, September.
    11. Craig Hill & Vincent S. Neary & Michele Guala & Fotis Sotiropoulos, 2020. "Performance and Wake Characterization of a Model Hydrokinetic Turbine: The Reference Model 1 (RM1) Dual Rotor Tidal Energy Converter," Energies, MDPI, vol. 13(19), pages 1-21, October.
    12. Álvarez, M. & Ramos, V. & Carballo, R. & Arean, N. & Torres, M. & Iglesias, G., 2020. "The influence of dredging for locating a tidal stream energy farm," Renewable Energy, Elsevier, vol. 146(C), pages 242-253.
    13. Niebuhr, C.M. & van Dijk, M. & Neary, V.S. & Bhagwan, J.N., 2019. "A review of hydrokinetic turbines and enhancement techniques for canal installations: Technology, applicability and potential," Renewable and Sustainable Energy Reviews, Elsevier, vol. 113(C), pages 1-1.
    14. Guerra, Maricarmen & Thomson, Jim, 2019. "Wake measurements from a hydrokinetic river turbine," Renewable Energy, Elsevier, vol. 139(C), pages 483-495.

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