Using an Oscillating Water Column Structure to Reduce Wave Reflection from a Vertical Wall
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 142, Issue 2
Abstract
Wave absorbers are usually needed for reducing wave reflection from vertical walls. Different from traditional wave absorbers, which dissipate wave energy into unusable forms, an oscillating water column (OWC) structure can serve as a wave absorber with the potential to generate electricity. In this study, the hydrodynamic performance of a pile-supported OWC structure in front of a vertical wall was investigated experimentally. The surface elevations inside the OWC chamber were measured at two points for a better description of the motion of the OWC. It was demonstrated that the incident wave energy could be effectively attenuated by the OWC structure. Compared with the pile-supported slotted-barrier-type wave absorbers, the OWC-type wave absorbers could function as effectively as the slotted-barrier-type wave absorbers but with a potential to extract wave energy for electricity generation. The effects of the gap between the OWC structure and the vertical wall were examined, and the experimental results show that the existence of the gap reduced the energy-extraction efficiency and did not benefit the total energy dissipation. It is suggested that an OWC-type wave absorber should be constructed such that its rear wall is part of the vertical wall.
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Acknowledgments
The authors thank three anonymous reviewers for their insightful and constructive comments and suggestions, which greatly improved the quality of this paper. The second author acknowledges the support from the University of Hawaii at Manoa (UHM). This is UHM SOEST Contribution 9449.
References
Arena, F., and Filianoti, P. (2007). “Small-scale field experiment on a submerged breakwater for absorbing wave energy.” J. Waterway, Port, Coastal, Ocean Eng., 161–167.
Boccotti, P. (2012). “Design of breakwater for conversion of wave energy into electrical energy.” Ocean Eng., 51(9), 106–118.
Evans, D. V., and Porter, R. (1995). “Hydrodynamic characteristics of an oscillating water column device.” Appl. Ocean Res., 17(3), 155–164.
Fugazza, M., and Natale, L. (1992). “Hydraulic design of perforated breakwaters.” J. Waterway, Port, Coastal, Ocean Eng., 1–14.
Goda, Y., and Suzuki, Y. (1976). “Estimation of incident and reflected waves in random wave experiments.” Proc., 15th Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 828–845.
Gouaud, F., Rey, V., Piazzola, J., and Van Hooff, R. (2010). “Experimental study of the hydrodynamic performance of an onshore wave power device in the presence of an underwater mound.” Coastal Eng., 57(11–12), 996–1005.
He, F., and Huang, Z. (2014). “Hydrodynamic performance of pile-supported OWC-type structures as breakwaters: An experimental study.” Ocean Eng., 88, 618–626.
He, F., Huang, Z., and Law, A. W.-K. (2012). “Hydrodynamic performance of a rectangular floating breakwater with and without pneumatic chambers: An experimental study.” Ocean Eng., 51(9), 16–27.
He, F., Huang, Z., and Law, A. W.-K. (2013). “An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction.” Appl. Energy, 106(6), 222–231.
Heath, T. V. (2012). “A review of oscillating water columns.” Philos. Trans. R. Soc. London, Ser. A, 370(1959), 235–245.
Hong, D. C., and 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 Eng., 34(5–6), 696–708.
Huang, Z., He, F., and Zhang, W. (2014). “A floating box-type breakwater with slotted barriers.” J. Hydraul. Res., 52(5), 720–727.
Huang, Z., Li, Y, and Liu, Y. (2011). “Hydraulic performance and wave loadings of perforated/slotted coastal structures: A review.” Ocean Eng., 38(10), 1031–1053.
Ijima, T., Tanaka, E., and Okuzono, H. (1976). “Permeable seawall with reservoir and the use of ‘WAROCK.’” Proc., 15th Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 2623–2661.
Isaacson, M., Baldwin, J., Allyn, N., and Cowdell, S. (2000). “Wave interactions with perforated breakwater.” J. Waterway, Port, Coastal, Ocean Eng., 229–235.
Koo, W. (2009). “Nonlinear time–domain analysis of motion-restrained pneumatic floating breakwater.” Ocean Eng., 36(9–10), 723–731.
Koo, W., and Kim, M.-H. (2010). “Nonlinear time-domain simulation of a land-based oscillating water column.” J. Waterway, Port, Coastal, Ocean Eng., 276–285.
Lebey, M., and Rivoalen, E. (2002). “Experimental study of the working principal and efficiency of a superposed inclined planes wave absorber.” Ocean Eng., 29(11), 1427–1440.
Le Mehaute, B. (1976). An introduction to hydrodynamics and water waves. Springer, New York.
Liu, C., Huang, Z., Keung, A. L. W., and Geng, N. (2010). “A numerical study of wave energy converter in the form of an oscillating water column based on a mixed Eulerian-Lagrangian formulation.” Proc., 29th Int. Conf. on Ocean, Offshore and Arctic Engineering (OMAE2010), ASME, New York, 589–596.
Madsen, P. A. (1983). “Wave reflection from a vertical permeable wave absorber.” Coastal Eng., 7(4), 381–396.
Morris-Thomas, M. T., Irvin, R. J., and Thiagarajan, K. P. (2007). “An investigation into the hydrodynamic efficiency of an oscillating water column.” J. Offshore Mech. Arct. Eng., 129(4), 273–278.
Ojima, R., Suzumura, S., and Goda, Y. (1984). “Theory and experiments on extractable wave power by an oscillating water-column type breakwater caisson.” Coastal Eng., 27, 315–326.
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., 150(1), 467–485.
Stiassnie, M., Boguslavsky, I., and Naheer, E. (1986). “Scattering and dissipation of surface wave by a bi-plate structure.” Appl. Ocean Res., 8(1), 33–37.
Takahashi, S., Nakada, H., Ohneda, H., and Shikamori, M. (1992). “Wave power conversion by a prototype wave power extracting caisson in Sakata Port.” Proc., 23rd Int. Conf. on Coastal Engineering, ASCE, Reston, VA, 3440–3453.
Thiruvenkatasamy, K., and Neelamani, S. (1997). “On the efficiency of wave energy caissons in array.” Appl. Ocean Res., 19(1), 61–72.
Thiruvenkatasamy, K., Neelamani, S., and Sato, M. (2005). “Nonbreaking wave forces on multiresonant oscillating water column wave power caisson breakwater.” J. Waterway, Port, Coastal, Ocean Eng., 77–84.
Tseng, R.-S., Wu, R.-H., and Huang, C.-C. (2000). “Model study of a shoreline wave-power system.” Ocean Eng., 27(8), 801–821.
Vijayakrishna Rapaka, E., Natarajan, R., and Neelamani, S. (2004). “Experimental investigation on the dynamic response of a moored wave energy device under regular sea waves.” Ocean Eng., 31(5–6),725–743.
Wang, D. J., Katory, M., and Li, Y. S. (2002). “Analytical and experimental investigation on the hydrodynamic performance of onshore wave-power devices.” Ocean Eng., 29(8), 871–885.
Zhu, S., and Chwang, A. T. (2001). “Investigations on the reflection behaviour of a slotted seawall.” Coastal Eng., 43(2), 93–104.
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© 2016 American Society of Civil Engineers.
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Received: Dec 29, 2014
Accepted: Jul 6, 2015
Published online: Jan 5, 2016
Published in print: Mar 1, 2016
Discussion open until: Jun 5, 2016
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