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Survivability of wave energy converters using CFD

Author

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  • Ransley, E.J.
  • Greaves, D.
  • Raby, A.
  • Simmonds, D.
  • Hann, M.

Abstract

The survivability of Wave Energy Converters (WECs) in extreme waves is a critical issue faced by developers; typically assessed via small scale physical experiments with considerable uncertainties. Until recently, confidence in the ability of numerical tools to reproduce extreme wave events and their interaction with floating structures has been insufficient to warrant their use in routine design processes. In this work a fully nonlinear, coupled tool for simulating focused wave impacts on generic WEC hull forms is described and compared with physical measurements. Two separate design waves, based on the 100 year wave at Wave Hub and using the NewWave formulation, have been reproduced numerically as have experiments in which a fixed truncated circular cylinder and a floating hemispherical-bottomed buoy are subject to these focused wave events. The numerical model is shown to reproduce the wave events well with some inaccuracies observed in shallower water depths. The results for pressure and run-up on the cylinder surface, as well as the high-order free-surface behaviour, also compare well with experimental results. The floating buoy's motion and mooring load are reproduced exceptionally well showing that the tool presented here can be used to assess WEC survivability and complement existing physical modelling.

Suggested Citation

  • Ransley, E.J. & Greaves, D. & Raby, A. & Simmonds, D. & Hann, M., 2017. "Survivability of wave energy converters using CFD," Renewable Energy, Elsevier, vol. 109(C), pages 235-247.
    • Handle: RePEc:eee:renene:v:109:y:2017:i:c:p:235-247
    DOI: 10.1016/j.renene.2017.03.003
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    Cited by:

    1. Domino, Stefan P. & Horne, Wyatt James, 2022. "Development and deployment of a credible unstructured, six-DOF, implicit low-Mach overset simulation tool for wave energy applications," Renewable Energy, Elsevier, vol. 199(C), pages 1060-1077.
    2. Windt, Christian & Davidson, Josh & Ringwood, John V., 2018. "High-fidelity numerical modelling of ocean wave energy systems: A review of computational fluid dynamics-based numerical wave tanks," Renewable and Sustainable Energy Reviews, Elsevier, vol. 93(C), pages 610-630.
    3. Pierre-Henri Musiedlak & Edward J. Ransley & Martyn Hann & Benjamin Child & Deborah M. Greaves, 2020. "Time-Splitting Coupling of WaveDyn with OpenFOAM by Fidelity Limit Identified from a WEC in Extreme Waves," Energies, MDPI, vol. 13(13), pages 1-26, July.
    4. Oliveira, D. & Lopes de Almeida, J.P.P.G. & Santiago, A. & Rigueiro, C., 2022. "Development of a CFD-based numerical wave tank of a novel multipurpose wave energy converter," Renewable Energy, Elsevier, vol. 199(C), pages 226-245.
    5. Collins, Ieuan & Hossain, Mokarram & Dettmer, Wulf & Masters, Ian, 2021. "Flexible membrane structures for wave energy harvesting: A review of the developments, materials and computational modelling approaches," Renewable and Sustainable Energy Reviews, Elsevier, vol. 151(C).
    6. Santo, H. & Taylor, P.H. & Stansby, P.K., 2020. "The performance of the three-float M4 wave energy converter off Albany, on the south coast of western Australia, compared to Orkney (EMEC) in the U.K," Renewable Energy, Elsevier, vol. 146(C), pages 444-459.
    7. Clemente, D. & Rosa-Santos, P. & Taveira-Pinto, F., 2021. "On the potential synergies and applications of wave energy converters: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    8. Sheng, Wanan, 2019. "Wave energy conversion and hydrodynamics modelling technologies: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 109(C), pages 482-498.
    9. Shayan Ramezanzadeh & Murat Ozbulut & Mehmet Yildiz, 2022. "A Numerical Investigation of the Energy Efficiency Enhancement of Oscillating Water Column Wave Energy Converter Systems," Energies, MDPI, vol. 15(21), pages 1-20, November.
    10. Brecht Devolder & Vasiliki Stratigaki & Peter Troch & Pieter Rauwoens, 2018. "CFD Simulations of Floating Point Absorber Wave Energy Converter Arrays Subjected to Regular Waves," Energies, MDPI, vol. 11(3), pages 1-23, March.
    11. Guo, Bingyong & Ringwood, John V., 2021. "Geometric optimisation of wave energy conversion devices: A survey," Applied Energy, Elsevier, vol. 297(C).
    12. 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).
    13. Gomes, Rui P.F. & Gato, Luís M.C. & Henriques, João C.C. & Portillo, Juan C.C. & Howey, Ben D. & Collins, Keri M. & Hann, Martyn R. & Greaves, Deborah M., 2020. "Compact floating wave energy converters arrays: Mooring loads and survivability through scale physical modelling," Applied Energy, Elsevier, vol. 280(C).
    14. Giannini, Gianmaria & Rosa-Santos, Paulo & Ramos, Victor & Taveira-Pinto, Francisco, 2022. "Wave energy converters design combining hydrodynamic performance and structural assessment," Energy, Elsevier, vol. 249(C).
    15. Ryan G. Coe & Yi-Hsiang Yu & Jennifer Van Rij, 2017. "A Survey of WEC Reliability, Survival and Design Practices," Energies, MDPI, vol. 11(1), pages 1-19, December.
    16. Gael Verao Fernández & Vasiliki Stratigaki & Peter Troch, 2019. "Irregular Wave Validation of a Coupling Methodology for Numerical Modelling of Near and Far Field Effects of Wave Energy Converter Arrays," Energies, MDPI, vol. 12(3), pages 1-19, February.
    17. A. H. Samitha Weerakoon & Young-Ho Lee & Mohsen Assadi, 2023. "Wave Energy Convertor for Bilateral Offshore Wave Flows: A Computational Fluid Dynamics (CFD) Study," Sustainability, MDPI, vol. 15(9), pages 1-40, April.
    18. Jin, Siya & Patton, Ron J. & Guo, Bingyong, 2019. "Enhancement of wave energy absorption efficiency via geometry and power take-off damping tuning," Energy, Elsevier, vol. 169(C), pages 819-832.
    19. Rosa-Santos, Paulo & Taveira-Pinto, Francisco & Rodríguez, Claudio A. & Ramos, Victor & López, Mario, 2019. "The CECO wave energy converter: Recent developments," Renewable Energy, Elsevier, vol. 139(C), pages 368-384.
    20. Penalba, Markel & Davidson, Josh & Windt, Christian & Ringwood, John V., 2018. "A high-fidelity wave-to-wire simulation platform for wave energy converters: Coupled numerical wave tank and power take-off models," Applied Energy, Elsevier, vol. 226(C), pages 655-669.
    21. Linnea Sjökvist & Malin Göteman, 2017. "Peak Forces on Wave Energy Linear Generators in Tsunami and Extreme Waves," Energies, MDPI, vol. 10(9), pages 1-19, September.

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