Publisher : Korean Institute of Navigation and Port Research
DOI : 10.5394/KINPR.2012.36.2.97
Title & Authors
3D Numerical Investigation on Reservoir System for an Overtopping Wave Energy Convertor Jin, Jiyuan; Liu, Zhen; Hong, Key-Yong; Hyun, Beom-Soo;
Overtopping Wave Energy Convertor (OWEC) is an offshore wave energy convertor, which comprises the circular ramp and reservoir. It collects the overtopped waves and converting water pressure head into electric power through the hydro-turbines installed in the vertical duct, which is fixed in the sea bed. The performance of OWEC can be represented by the operating water heads of the device, which depends on the amount of the wave water overtopping into the reservoir. In the present paper, the reservoir with the duct connecting to the sea water are studied in the 3D numerical wave tank, which has been developed based on the computational fluid dynamics software Fluent 6.3. Both the overtopping motion and the discharges of the reservoir are investigated together, and several shape parameters and incident wave conditions are varied to demonstrate their effects on the performance of OWEC.
Falnes, L. and Loveseth, J. (1991), "Ocean Wave Energy", Energy Policy, Vol. 19, No. 8, pp. 768-775.
Hieu, P.D., Katsutoshi, T. and Ca, V.T. (2004), "Numerical Simulation of Breaking Waves using a Two-phase Flow Model", Applied Mathematical Modeling, Vol. 28, No. 11, pp. 983-1005.
Hirt, C.W. and Nichols, B.D. (1981), "Volume of Fluid (VOF) Method for the Dynamics of Free Boundaries", J Comp Phys, Vol. 39, pp. 201-225.
Isobe, M. (2001), "A VOF-based Numerical Model for Wave Transformation in Shallow Water", In Proc Int. Workshop on ADMS21, PHRI, pp. 200-204.
Kofoed, J.P., Frigaard, P., Madsen, E.F. and Sorensen, H.C. (2006), "Prototype Testing of the Wave Energy Converter Wave Dragon", Renewable Energy, Vol. 31, No. 2, pp 181-189.
Lin, P. and Liu, PL-F (1998), "A Numerical Study of Breaking Waves in the Surf Zone", J Fluid Mech, Vol. 359, pp. 239-264.
Liu, Z., Hyun B.S. and Jin J.Y. (2008), "Numerical Prediction for Overtopping Performance of OWEC", Journal of the Korean Society for Marine Environmental Engineering, Vol. 11, No. 1, pp. 35-41.
Losada, I.J., Lara, Javier L., Guanche, R. and Gonzalez-Ondina J.M. (2008), "Numerical analysis of wave overtopping of rubble mound breakwaters", Coastal Engineering, Vol. 55, pp. 47-62.
Margheritini, L., Vicinanza, D. and Frigaard, P. (2009), "SSG wave energy converter: Design, reliability and hydraulic performance of an innovative overtopping device", Renewable Energy, Vol., 34, pp. 1371-1380.
Nam B.W., Shin S.H., Hong K.Y. and Hong S.W. (2008), "Numerical simulation of the wave flow over the spiral-reef overtopping device", Proceedings of the Eighth (2008) ISOPE Pacific/Asia Offshore Mechanics Symposium, Bangkok, Thailand, Vol. 1, pp. 262-267.
Reeve, D.E., Soliman, A. and Lin P.Z. (2008), "Numerical study of combined overflow and wave overtopping over a smooth impermeable seawall", Coastal Engineering, Vol. 55, pp. 155-166.
Tedd, James and Kofoed, J.P. (2009), "Measurements of overtopping flow time series on the Wave Dragon, wave energy converter", Renewable Energy, Vol. 34, pp. 711-717.
Sommerfeld, A. (1949), "Partial Differential Equation in Physics", Academic Press, New York.
Youngs, D.L. (1982), "Time-dependent Multi-material Flow with Large Fluid Distortion", Num Meth Fluid Dynamics, Academic Press, New York.