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Modelling a Heaving Point-Absorber with a Closed-Loop Control System Using the DualSPHysics Code

Author

Listed:
  • Pablo Ropero-Giralda

    (Environmental Physics Laboratory (EPhysLab), CIM-UVIGO, Universidade de Vigo, 32004 Ourense, Spain)

  • Alejandro J. C. Crespo

    (Environmental Physics Laboratory (EPhysLab), CIM-UVIGO, Universidade de Vigo, 32004 Ourense, Spain)

  • Ryan G. Coe

    (Sandia National Laboratories, Albuquerque, NM 87123, USA)

  • Bonaventura Tagliafierro

    (Department of Civil Engineering, Università degli Studi di Salerno, 84084 Fisciano, Italy)

  • José M. Domínguez

    (Environmental Physics Laboratory (EPhysLab), CIM-UVIGO, Universidade de Vigo, 32004 Ourense, Spain)

  • Giorgio Bacelli

    (Sandia National Laboratories, Albuquerque, NM 87123, USA)

  • Moncho Gómez-Gesteira

    (Environmental Physics Laboratory (EPhysLab), CIM-UVIGO, Universidade de Vigo, 32004 Ourense, Spain)

Abstract

The present work addresses the need for an efficient, versatile, accurate and open-source numerical tool to be used during the design stage of wave energy converters (WECs). The device considered here is the heaving point-absorber developed and tested by Sandia National Laboratories. The smoothed particle hydrodynamics (SPH) method, as implemented in DualSPHysics, is proposed since its meshless approach presents some important advantages when simulating floating devices. The dynamics of the power take-off system are also modelled by coupling DualSPHysics with the multi-physics library Project Chrono. A satisfactory matching between experimental and numerical results is obtained for: (i) the heave response of the device when forced via its actuator; (ii) the vertical forces acting on the fixed device under regular waves and; (iii) the heave response of the WEC under the action of both regular waves and the actuator force. This proves the ability of the numerical approach proposed to simulate accurately the fluid–structure interaction along with the WEC’s closed-loop control system. In addition, radiation models built from the experimental and WAMIT results are compared with DualSPHysics by plotting the intrinsic impedance in the frequency domain, showing that the SPH method can be also employed for system identification.

Suggested Citation

  • Pablo Ropero-Giralda & Alejandro J. C. Crespo & Ryan G. Coe & Bonaventura Tagliafierro & José M. Domínguez & Giorgio Bacelli & Moncho Gómez-Gesteira, 2021. "Modelling a Heaving Point-Absorber with a Closed-Loop Control System Using the DualSPHysics Code," Energies, MDPI, vol. 14(3), pages 1-20, February.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:3:p:760-:d:491002
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    References listed on IDEAS

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    1. Ropero-Giralda, Pablo & Crespo, Alejandro J.C. & Tagliafierro, Bonaventura & Altomare, Corrado & Domínguez, José M. & Gómez-Gesteira, Moncho & Viccione, Giacomo, 2020. "Efficiency and survivability analysis of a point-absorber wave energy converter using DualSPHysics," Renewable Energy, Elsevier, vol. 162(C), pages 1763-1776.
    2. Bret Bosma & Tim Lewis & Ted Brekken & Annette Von Jouanne, 2015. "Wave Tank Testing and Model Validation of an Autonomous Wave Energy Converter," Energies, MDPI, vol. 8(8), pages 1-16, August.
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    5. Penalba, Markel & Giorgi, Giussepe & Ringwood, John V., 2017. "Mathematical modelling of wave energy converters: A review of nonlinear approaches," Renewable and Sustainable Energy Reviews, Elsevier, vol. 78(C), pages 1188-1207.
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    9. Brito, M. & Canelas, R.B. & García-Feal, O. & Domínguez, J.M. & Crespo, A.J.C. & Ferreira, R.M.L. & Neves, M.G. & Teixeira, L., 2020. "A numerical tool for modelling oscillating wave surge converter with nonlinear mechanical constraints," Renewable Energy, Elsevier, vol. 146(C), pages 2024-2043.
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    1. Tagliafierro, Bonaventura & Martínez-Estévez, Iván & Domínguez, José M. & Crespo, Alejandro J.C. & Göteman, Malin & Engström, Jens & Gómez-Gesteira, Moncho, 2022. "A numerical study of a taut-moored point-absorber wave energy converter with a linear power take-off system under extreme wave conditions," Applied Energy, Elsevier, vol. 311(C).

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