Wave Energy Conversion by Multiple Bottom-Hinged Surging WEC

  • A. K. Kumawat
  • D. Karmakar
  • C. Guedes Soares
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 23)


The power capture and performance of arbitrary array of submerged bottom-hinged deflectors of finite width is analysed for two different configurations. The bottom-hinged deflectors are modelled as non-zero thickness and rotated at small angle in the vertical plane about an axis located in the seabed orthogonal to the direction of the wave propagation. The numerical study is performed on the hydrodynamic performance of the flapping deflector type oscillating wave surge converter (OWSC). Three-dimensional boundary element method is used to calculate hydrodynamic coefficients in frequency domain. A parametric study was made by comparing two geometrically different deflectors, i.e., rectangular and wedge cross-section for power capture assessment. Further, the analysis is performed for arbitrary array configurations of OWSC with oblique incident wave heading angles and the power take off (PTO) system is modelled as a linear damper and spring. The study for multiple arrays of the flap-type wave energy converters is essential for economical design of project in order to exploit more renewable energy from the ocean waves.


Wave energy Bottom-hinged deflector Wave surge converter Power take-off Arrays of WEC 



The authors acknowledge Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India for supporting financially under the Young Scientist research grant no. YSS/2014/000812 and DST for India-Portugal Bilateral Scientific Technological Cooperation Project grant no. DST/INT/Portugal/P-13/2017.


  1. 1.
    Babarit A (2010) Impact of long separating distances on the energy production of two interacting wave energy converters. Ocean Eng 37:718–729CrossRefGoogle Scholar
  2. 2.
    Bozo NT, Karmakar D, Guedes Soares C (2015) Numerical investigation of a submerged surging plate, wave energy converter. In: Guedes Soares C (ed) Renewable energies offshore. CRC Press, pp 515–522Google Scholar
  3. 3.
    Dev CP, Karmakar D (2016) Comparative study on different configuration of wave surge converter. Proceedings of 21st international conference on hydraulics, water resource and coastal engineering, HYDRO 2016, CWPRS, Pune, 8th–10th Dec, 2016, pp 1005–1013Google Scholar
  4. 4.
    Evans DV, Porter R (1996) Hydrodynamic characteristics of a thin rolling plate in finite depth of water. Appl Ocean Res 18(4):215–228CrossRefGoogle Scholar
  5. 5.
    Falnes J, Budal K (1982) Wave-power absorption by parallel rows of interacting oscillating bodies. Appl Ocean Res 4(4):207CrossRefGoogle Scholar
  6. 6.
    Folley M, Whittaker T Osterried M (2004) The oscillating wave surge converter. In: 14th international offshore and polar engineering conference, Toulon, FranceGoogle Scholar
  7. 7.
    Folley M, Whittaker TJT, Henry A (2007) The effect of water depth on the performance of small surging wave energy converter. Ocean Eng 34:1265–1274CrossRefGoogle Scholar
  8. 8.
    Folley M, Whittaker TJT, Hoff JV (2007) The design of small seabed-mounted bottom-hinged wave energy converters. In: Proceedings of the 7th European wave and tidal energy conference, Porto, PortugalGoogle Scholar
  9. 9.
    Gomes RPF, Lopes MFP, Henriques JCC, Gato LMC, Falcão AFO (2011) A study on the wave energy conversion by submerged bottom hinged-plates. In: Proceedings of 8th European tidal and wave energy conference, SwedenGoogle Scholar
  10. 10.
    Gomes RPF, Lopes MFP, Henriques JCC, Gato LMC, Falcão AFO (2015) The dynamics and power extraction of bottom-hinged plate wave energy converters in regular and irregular waves. Ocean Eng 96:86–99CrossRefGoogle Scholar
  11. 11.
    Lee CH, Newman JN (2006) WAMIT user manual, ver 6.4. WAMIT Inc, Chestnut Hill, MA, USAGoogle Scholar
  12. 12.
    Mavrakos SA (1991) Hydrodynamic coefficients for groups of interacting vertical axisymmetric bodies. Ocean Eng 18(5):485–515CrossRefGoogle Scholar
  13. 13.
    Noad IF, Porter R (2015) Optimization of arrays of flap-type oscillating wave surge converters. Appl Ocean Res 50:237–253CrossRefGoogle Scholar
  14. 14.
    Renzi E, Dias F (2012) Relations for a periodic array of flap-type wave energy converters. Appl Ocean Res 39:31–39CrossRefGoogle Scholar
  15. 15.
    Renzi E, Dias F (2013) Hydrodynamic of the oscillating wave surge converter in the open ocean. Eur J Mech B/Fluid 41:1–10MathSciNetCrossRefGoogle Scholar
  16. 16.
    Renzi E, Abdolali A, Bellotti G, Dias F (2014) Wave-power absorption from a finite array of oscillating wave energy converters. Renew Energy 63:55–63Google Scholar
  17. 17.
    Renzi E, Doherty K, Henry A, Dias F (2014) How does Oyster work? The simple interpretation of Oyster mathematics. Eur J Mech B/Fluids 47:124–131MathSciNetCrossRefGoogle Scholar
  18. 18.
    Sarkar D, Renzi E, Dias F (2014) Wave farm modelling of oscillating wave surge converters. Proc R Soc A-470, 1471–2946Google Scholar
  19. 19.
    Sarkar D, Renzi E, Dias F (2015) Effect of straight coast on the hydrodynamics and performance of the oscillating wave energy converter. Ocean Eng 105:25–32Google Scholar
  20. 20.
    Sarkar D, Contal E, Vayatis N, Dias F (2016) Prediction and optimization of wave energy converter arrays using a machine learning approach. Renew Energy 97:504–517CrossRefGoogle Scholar
  21. 21.
    Tom NM, Lawson MJ, Yu YH, Wright AD (2016) Development of a nearshore oscillating wave surge converter with variable geometry. Renew Energy 96:410–424Google Scholar
  22. 22.
    Whittaker TJT, Folley M (2012) Nearshore oscillating wave surge converters and the development of Oyster. Philos Trans R Soc A 370:345–364CrossRefGoogle Scholar
  23. 23.
    Wilkinson L, Whittaker TJT, Thies PR, Day A, Ingram D (2017) The power-capture of a nearshore, modular, flap-type wave energy converter in regular waves. Ocean Eng 137:394–403CrossRefGoogle Scholar
  24. 24.
    Yu Y-H, Li Y, Hallett K, Hotimsky C (2014) Design and analysis for a floating oscillating surge wave energy converter. In: The American society of mechanical engineers (ASME) 33rd international conference on ocean, Offshore and Arctic engineering, San Francisco, CAGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Applied Mechanics and HydraulicsNational Institute of Technology KarnatakaSurathkal, MangaloreIndia
  2. 2.Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de LisboaLisbonPortugal

Personalised recommendations