DOI QR코드

DOI QR Code

Performance Prediction of an OWC Wave Power Plant with 3-D Characteristics in Regular Waves

  • Hong, Do-Chun (Division Center for Advanced Transportation Vehicles Chungnam National Univ.) ;
  • Hong, Keyyong (Maritime & Ocean Engineering Research Institute, KIOST)
  • Received : 2012.11.07
  • Accepted : 2012.11.26
  • Published : 2012.12.31

Abstract

The primary wave energy conversion by a three-dimensional bottom-mounted oscillating water column (OWC) wave power device in regular waves has been studied. The linear potential boundary value problem has been solved following the boundary matching method. The optimum shape parameters such as the chamber length and the depth of the front skirt of the OWC chamber obtained through two-dimensional numerical tests in the frequency domain have been applied in the design of the present OWC chamber. Time-mean wave power converted by the OWC device and the time-mean second-order wave forces on the OWC chamber structure have been presented for different wave incidence angles in the frequency-domain. It has been shown that the peak period of $P_m$ for the optimum damping parameter coincides with the peak period of the time.mean wave drift force when ${\gamma}=0$.

Keywords

References

  1. Evans, D. V.(1982), "Wave-power absorption by systems of oscillating surface pressure distributions," J. Fluid Mech., Vol. 114, pp. 481-499. https://doi.org/10.1017/S0022112082000263
  2. Falnes, J. and McIver, P.(1985), "Surface wave interactions with systems of oscillating bodies and pressure distributions," Applied Ocean Res. Vol. 7-4, pp. 225-234.
  3. Hong, D. C. and Hong, K. Y.(2010), "Prediction of wave energy absorption efficiency and wave loads of a three-dimensional bottom-mounted OWC wave power device," J. of the Korean Soc. for Marine Environmental Engr. Vol. 13-1, pp. 47-42.
  4. Hong, D. C. and Hong, S. Y.(2007), "Floating wave energy device with two oscillating water columns," Proc. 26th OMAE, paper No. OMAE2007-29103, Sandiego, USA.
  5. Hong, D. C., Hong, S. Y. and Hong, S. W.(2004), "Numerical study of the motions and drift force of a floating OWC device," Ocean Engineering, Vol. 31-2, pp. 139-164. https://doi.org/10.1016/S0029-8018(03)00118-5
  6. Hong, K. Y., Shin, S. H. and Hong, D. C.(2007), "Wave energy absorption efficiency of pneumatic chamber of OWC wave energy converter," J. of the Korean Soc. for Marine Environmental Engr. Vol. 10-3, pp. 173-180.
  7. Pinkster, J. A. and van Oortmerssen, G.(1977), "Computation of the first and second order wave forces on oscillating bodies in regular waves," Proc. 2nd Internat. Conf. on Numerical Ship Hydrodynamics, pp. 136-159.
  8. Sarmento, A.J.N.A. and Falcão, A. F. de O.(1985), "Wave generation by an oscillating surface-pressure and its application in wave-energy extraction ," J. Fluid Mech., Vol. 150, pp. 467-485. https://doi.org/10.1017/S0022112085000234