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:: Volume 2, Issue 3 (11-2018) ::
ijcoe 2018, 2(3): 19-27 Back to browse issues page
Experimental Study of Wave Spectrum Type Impact on Inner Chamber Fluctuation, Pressure and Reflection of OWC Device
Milad Zabihi, Said Mazaheri , Masoud Montazeri Namin
Iranian National Institute for Oceanography and Atmospheric Science
Abstract:   (631 Views)
Increasing problems due to supplying energy demand conveyed researchers to find a solution in renewable energy resources and consequently marine engineers drew attentions towards wave energy which has the merit of higher energy density than the other resources. Oscillating Water Column (OWC) is one of the most propitious devices for capturing wave energy. Researchers have studied the device under different wave height and period conditions and they investigated various geometric parameters such as front wall draft and the chamber length. However, the effects of wave spectrum type or shape has not been investigated deeply yet. Different wave spectra have been developed for different places around the world but the focus of this study is on the two well-known spectra called JONSWAP and Pierson-Moskowitz to see how the type of the spectrum can impact on inner chamber fluctuation, pressure variation and reflection response of an offshore OWC. To achieve this goal, a 1:15 scale model of an offshore OWC was constructed in National Iranian Marine Laboratory. The results show that inner chamber free surface spectrum is affected by the type of incident wave spectrum. In another word, energy content at peak frequency was approximately 50% higher when the incident wave spectrum is of JONSWAP type. However, energy corresponding to sloshing frequency and total energy content in the chamber were almost the same for both types of the spectra. Pressure spectra inside the chamber showed a similar trend as free surface elevation. Although there was a little difference in reflection response of an OWC influenced by the type of spectra, this discrepancy was more pronounced in high frequency waves.
Keywords: OWC, Wave Spectrum, Reflection, Experimental
Full-Text [PDF 717 kb]   (160 Downloads)    
Type of Study: Research | Subject: Marine Renewable Energies
Received: 2018/10/18 | Accepted: 2018/12/16 | Published: 2019/02/26
References
1. N. Khan, A. Kalair, N. Abas, and A. Haider, "Review of ocean tidal, wave and thermal energy technologies," Renewable and Sustainable Energy Reviews, vol. 72. pp. 590–604, 2017. [DOI:10.1016/j.rser.2017.01.079]
2. I. López, J. Andreu, S. Ceballos, I. Martínez de Alegría, and I. Kortabarria, "Review of wave energy technologies and the necessary power-equipment," Renew. Sustain. Energy Rev., vol. 27, pp. 413–434, Nov. 2013. [DOI:10.1016/j.rser.2013.07.009]
3. F. He, J. Leng, and X. Zhao, "An experimental investigation into the wave power extraction of a floating box-type breakwater with dual pneumatic chambers," Appl. Ocean Res., vol. 67, pp. 21–30, 2017. [DOI:10.1016/j.apor.2017.06.009]
4. A. F. O. Falcão and J. C. C. Henriques, "Model-prototype similarity of oscillating-water-column wave energy converters," Int. J. Mar. Energy, vol. 6, pp. 18–34, 2014. [DOI:10.1016/j.ijome.2014.05.002]
5. D. V Evans, "The oscillating water column wave energy device," J. Inst. Maths Applics, vol. 22, pp. 423–433, 1978. [DOI:10.1093/imamat/22.4.423]
6. A. F. de O. Falcão and A. Sarmento, "Wave generation by a periodic surface pressure and its application in wave-energy extraction," in 15th international congress of theoritical and applied mechanics, 1980.
7. J. Falnes and P. McIver, "Surface wave interactions with systems of oscillating bodies and pressure distributions," Appl. Ocean Res., vol. 7, no. 4, pp. 225–234, 1985. [DOI:10.1016/0141-1187(85)90029-X]
8. A. J. N. A. Sarmento and A. F. O. De Falcao, "Wave generation by an oscillating surface-pressure and its applications in wave energy extraction," J. Fluid Mech., vol. 150, pp. 467–485, 1985. [DOI:10.1017/S0022112085000234]
9. D. . Evans, "Wave power absorption by systems of oscillating surface pressure distributions," J. Fluid Mech., vol. 114, pp. 481–499, 1982. [DOI:10.1017/S0022112082000263]
10. A. Brito-Melo, A. J. N. a. Sarmento, A. H. Clement, and G. Delhommeau, "A 3D boundary element code for the analysis of OWC wave-power plants," Proc. 1999 Ninth Int. Offshore Polar Eng. Conf. (Volume 1), Brest, Fr. 30 May - 4 June 1999, vol. I, pp. 188–195, 1999.
11. Y. Delauré and A. Lewis, "3D hydrodynamic modelling of fixed oscillating water column wave power plant by a boundary element methods," Ocean Eng., vol. 30, pp. 309–330, 2003. [DOI:10.1016/S0029-8018(02)00032-X]
12. A. Iturrioz, R. Guanche, J. L. Lara, C. Vidal, and I. J. Losada, "Validation of OpenFOAM® for Oscillating Water Column three-dimensional modeling," Ocean Eng., vol. 107, pp. 222–236, 2015. [DOI:10.1016/j.oceaneng.2015.07.051]
13. T. Vyzikas, S. Deshoulières, O. Giroux, M. Barton, and D. Greaves, "Numerical study of fixed Oscillating Water Column with RANS-type two-phase CFD model," Renew. Energy, vol. 102, pp. 294–305, 2017. [DOI:10.1016/j.renene.2016.10.044]
14. I. Simonetti, L. Cappietti, H. Elsafti, and H. Oumeraci, "Optimization of the geometry and the turbine induced damping for fixed detached and asymmetric OWC devices: A numerical study," Energy, vol. 139, pp. 1197–1209, 2017. [DOI:10.1016/j.energy.2017.08.033]
15. I. Simonetti, L. Cappietti, H. Elsafti, and H. Oumeraci, "Evaluation of air compressibility effects on the performance of fixed OWC wave energy converters using CFD modelling," Renew. Energy, vol. 119, pp. 741–753, 2018. [DOI:10.1016/j.renene.2017.12.027]
16. A. Kamath, H. Bihs, and Ø. A. Arntsen, "Numerical investigations of the hydrodynamics of an oscillating water column device," Ocean Eng., vol. 102, pp. 40–50, Jul. 2015. [DOI:10.1016/j.oceaneng.2015.04.043]
17. M. T. Morris-Thomas, R. J. Irvin, and K. P. Thiagarajan, "An Investigation Into the Hydrodynamic Efficiency of an Oscillating Water Column," J. Offshore Mech. Arct. Eng., vol. 129, no. 4, p. 273, 2007. [DOI:10.1115/1.2426992]
18. T. Vyzikas, S. Deshoulières, M. Barton, O. Giroux, D. Greaves, and D. Simmonds, "Experimental investigation of different geometries of fixed oscillating water column devices," Renew. Energy, vol. 104, pp. 248–258, Apr. 2017. [DOI:10.1016/j.renene.2016.11.061]
19. A. Viviano, S. Naty, E. Foti, T. Bruce, W. Allsop, and D. Vicinanza, "Large-scale experiments on the behaviour of a generalised Oscillating Water Column under random waves," Renew. Energy, vol. 99, pp. 875–887, Dec. 2016. [DOI:10.1016/j.renene.2016.07.067]
20. D.-Z. Ning, R.-Q. Wang, Q.-P. Zou, and B. Teng, "An experimental investigation of hydrodynamics of a fixed OWC Wave Energy Converter," Appl. Energy, vol. 168, pp. 636–648, Apr. 2016. [DOI:10.1016/j.apenergy.2016.01.107]
21. W. Sheng, B. Flannery, A. Lewis, and R. Alcorn, "Experimental Studies of a Floating Cylindrical OWC WEC," in Ocean Space Utilization; Ocean Renewable Energy, 2012, vol. 7, p. 169.
22. I. Crema, I. Simonetti, L. Cappietti, and H. Oumeraci, "Laboratory experiments on oscillating water column wave energy converters integrated in a very large floating structure," in the 11th International Conference of European Wave and Tidal Energy EWTEC, 2015, pp. 1–7.
23. A. Elhanafi and C. J. Kim, "Experimental and numerical investigation on wave height and power take–off damping effects on the hydrodynamic performance of an offshore–stationary OWC wave energy converter," Renew. Energy, vol. 125, pp. 518–528, 2018. [DOI:10.1016/j.renene.2018.02.131]
24. A. Elhanafi, A. Fleming, G. Macfarlane, and Z. Leong, "Numerical hydrodynamic analysis of an offshore stationary–floating oscillating water column–wave energy converter using CFD," Int. J. Nav. Archit. Ocean Eng., vol. 9, no. 1, pp. 77–99, 2017. [DOI:10.1016/j.ijnaoe.2016.08.002]
25. A. Elhanafi, G. Macfarlane, A. Fleming, and Z. Leong, "Investigations on 3D effects and correlation between wave height and lip submergence of an offshore stationary OWC wave energy converter," Appl. Ocean Res., vol. 64, pp. 203–216, 2017. [DOI:10.1016/j.apor.2017.03.002]
26. M. Zabihi, S. Mazaheri, and M. Montazeri-Namin, "Experimental hydrodynamic investigation of a fixed offshore Oscillating Water Column device," Applied Ocean Research Journal, under revision, 2018.
27. A. B. Rabinovich, "Seiches and Harbour Oscillations," in Handbook of Coastal and Ocean Engineering, 2009, pp. 193–236.
28. C. Faraci, P. Scandura, E. Foti, Reflection of sea waves by combined caissons, J.Waterw. Port, Coast. Ocean Eng. 2015. [DOI:10.1061/(ASCE)WW.1943-5460.0000275]
29. E. P. D. Mansard and E. R. Funke, "The Measurement of Incident and Reflected Spectra Using a Least Squares Method," Coast. Eng. 1980, pp. 154–172, 1980.
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Zabihi M, Mazaheri S, Montazeri Namin M. Experimental Study of Wave Spectrum Type Impact on Inner Chamber Fluctuation, Pressure and Reflection of OWC Device . ijcoe. 2018; 2 (3) :19-27
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