Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30174
Analytical Investigation of the Effects of a Standing Ocean Wave in a Wave-Power Device OWC

Authors: E.G. Bautista, F. Méndez, O. Bautista, J.C. Arcos

Abstract:

In this work we study analytically and numerically the performance of the mean heave motion of an OWC coupled with the governing equation of the spreading ocean waves due to the wide variation in an open parabolic channel with constant depth. This paper considers that the ocean wave propagation is under the assumption of a shallow flow condition. In order to verify the effect of the waves in the OWC firstly we establish the analytical model in a non-dimensional form based on the energy equation. The proposed wave-power system has to aims: one is to perturb the ocean waves as a consequence of the channel shape in order to concentrate the maximum ocean wave amplitude in the neighborhood of the OWC and the second is to determine the pressure and volume oscillation of air inside the compression chamber.

Keywords: Oscillating water column, Shallow flow, Waveenergy.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1334662

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1148

References:


[1] Boccotti Paolo, 2007. Comparison between a U-OWC and a conventional OWC. Ocean Engineering, Volume 34, Issues 5-6, Pages 799-805.
[2] Budal, K., Falnes, J., Kyllingstad, A., Olteda├▒, G., 1979. Experiments with point absorvers. 1st symposium on Wave Energy Utilization, Gotehburg.
[3] Budal, K., Falnes, J., 1980. Interacting point absorbers with controlled motion. In: Count, B.M. (Ed.), Power fom Sea Waves. Academic Press, New York.
[4] Evans D. V., 1972. The Oscillating Water Column Wave-energy Device IMA J Appl Math, December 1978; 22: 423 - 433.
[5] Evans, D.V., 1982. Wave-power absortion by systems of oscillating surface pressure distribution. Journal of Fluid Mechanics 114, 481-499.
[6] Czitrom, S.P.R., 1997. Wave energy-driven resonant sea-water pump. Journal of Offshore Mechanics and Arctic Engineering, Transactions of the ASME 119, 191-195.
[7] Czitrom, S.P.R., 2000. Patent pending. Sintonizador para sistemas de extraccion de energía de oleaje que operan por resonancia. Solicitud de Patente Mexicana No. 933605.
[8] Czitrom, S.P.R., Godoy, R., Prado, E., Pe' rez, P., Peralta-Fabi, R., 2000. Hydrodynamics of an oscillating water column seawater pump. Part I: theoretical aspects. Ocean Engineering 27, 1181-1198.
[9] Delauré Y. M. C., Lewis A., 2003. 3D hydrodynamic modelling of fixed oscillating water column wave power plant by a boundary element methods. Ocean Engineering, Volume 30, Issue 3, Pages 309- 330.
[10] El Marjani A., Castro Ruiz F., Rodriguez M.A., Parra Santos M.T. 2008. Numerical modelling in wave energy conversion systems. Energy, Volume 33, Issue 8, Pages 1246-1253.
[11] Eriksson M. J. Isberg, M. Leijon, 2005. Hydrodynamic modelling of a direct drive wave energy converter. International Journal of Engineering Science, Volume 43, Issues 17-18, Pages 1377-1387.
[12] Falcão A. F. de O., Justino P. A. P. OWC wave energy devices with air flow control. Ocean Engineering, Volume 26, Issue 12, December 1999, Pages 1275-1295.
[13] Falcao, A.F. de O., Sarmento, A.J.N.A., 1980. Wave generation by a periodic surface pressure and its application in wane-energy extraction. In: 15th International Congress on Theoretical and Applied Mechanics, Toronto.
[14] Hong D.C., Hong S.Y., 2007. Hydroelastic responses and drift forces of a very-long floating structure equipped with a pin-connected oscillating-water-column breakwater system Ocean Engineering, Volume 34, Issues 5-6, Pages 696-708.
[15] Josset C., Clément A.H., 2007. A time-domain numerical simulator for oscillating water column wave power plants. Renewable Energy, Volume 32, Issue 8, Pages 1379-1402.
[16] Paixão Conde J.M., Gato L.M.C., 2008. Numerical study of the airflow in an oscillating water column wave energy converter. Renewable Energy, Volume 33, Issue 12, Pages 2637-2644.