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Numerical modelling in wave energy conversion systems

Author

Listed:
  • El Marjani, A.
  • Castro Ruiz, F.
  • Rodriguez, M.A.
  • Parra Santos, M.T.

Abstract

This paper deals with a numerical modelling devoted to predict the flow characteristics in the components of an oscillating water column (OWC) system used for the wave energy capture. In the present paper, the flow behaviour is modelled by using the FLUENT code. Two numerical flow models have been elaborated and tested independently in the geometries of an air chamber and a turbine, which is chosen of a radial impulse type. The flow is assumed to be three-dimensional (3D), viscous, turbulent and unsteady. The FLUENT code is used with a solver of the coupled conservation equations of mass, momentum and energy, with an implicit time scheme and with the adoption of the dynamic mesh and the sliding mesh techniques in areas of moving surfaces. Turbulence is modelled with the k–ε model. The obtained results indicate that the developed models are well suitable to analyse the air flows both in the air chamber and in the turbine. The performances associated with the energy transfer processes have been well predicted. For the turbine, the numerical results of pressure and torque were compared to the experimental ones. Good agreements between these results have been observed.

Suggested Citation

  • El Marjani, A. & Castro Ruiz, F. & Rodriguez, M.A. & Parra Santos, M.T., 2008. "Numerical modelling in wave energy conversion systems," Energy, Elsevier, vol. 33(8), pages 1246-1253.
    • Handle: RePEc:eee:energy:v:33:y:2008:i:8:p:1246-1253
    DOI: 10.1016/j.energy.2008.02.018
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