Asymmetry Effect on Hydrodynamic Characteristics of Double Chamber Oscillating Water Column Device

  • Wilbert R Assistant Professor, Civil Engineering Department, Govt .Engineering College Wayanad, Kerala, India-670644
  • Sundar V Professor, Ocean Engineering Department, Indian Institute of Technology Madras, Chennai, India-600036
  • Sannasiraj S.A Professor, Ocean Engineering Department, Indian Institute of Technology Madras, Chennai, India-60003
DOI: http://dx.doi.org/10.36842/jomase.v5i1.510

Abstract

Awakening of renewable energy in the latter half of the twentieth century has identified wave energy as a potential source of clean energy due to its high intensity of energy flux compared with other renewable sources of energy. Subsequent research found out that Oscillating Water Column (OWC) concept is an easier and simple technology to harness energy from the Ocean waves. This had lead to a rapid progress in research pertaining to tuning of the system for optimum efficiency. The Double Chamber Oscillating Water Column (DCOWC) concept is a modified form of OWC. The present study is an extension of previous studies for understanding its hydrodynamics with respect to its two geometric parameters; bottom opening and front duct width. The experimental works carried out on a scaled down model for identifying the effective combination between them is explained. The hydrodynamic principles governing the maximum harness of wave energy is detailed here. The discussions related to wave energy absorption, wave energy conversion, phase angle difference between pressure excitation and air pressure and wave amplification which govern the efficiency of the DCOWC are included for a better understanding on the effect between geometry and wave characteristics. It is expected that the findings of this study enhance knowledge on the hydrodynamic aspects of the concept of a DCOWC.

##Keywords:## Wave Energy; Dynamic Pressure; Asymmetry; Phase Angle, Wave Amplification.

Downloads

Download data is not yet available.
Published
Mar 20, 2014
How to Cite
R, Wilbert; V, Sundar; S.A, Sannasiraj. Asymmetry Effect on Hydrodynamic Characteristics of Double Chamber Oscillating Water Column Device. Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 5, n. 1, p. 1-17, mar. 2014. ISSN 2527-6085. Available at: <https://www.isomase.org/Journals/index.php/jomase/article/view/510>. Date accessed: 14 july 2026. doi: http://dx.doi.org/10.36842/jomase.v5i1.510.
Citation Formats
Issue
Vol 5 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Section
Articles

References

1. Hagerman, G. (1995). A standard economic assessment methodology for renewable ocean energy projects, Proceedings of the International Symposium on Coastal Ocean Space Utilization (COSU’95), 129-138.
2. Sundar, V., Torgeir, M. and Jorgen, H. (2010). Conceptual Designs on Integration of Oscillating Water column Devices in Breakwaters, Proc of the ASME 2010 29th Intl Conf on Ocean, Offshore and Arctic Eng OMAE2010,pp 479-489.
3. Falcao, A.F.D. (2010). Wave energy utilization: A review of the technologies. Renewable and Sustainable Energy Reviews, 14, 899–918.
4.Masuda, Y. (1979). Experimental Full Scale Result of Wave Power Machine Kaimei in 1978. Symposium on Wave Energy Utilization Gothenburg, October.
5. Ambli, N., Bonke, K., Malmo, O. and Reitan, H.(1982). The Kvaerner multi resonant OWC, Proceedings of the 2ndInternational Symposium on wave Energy Utilisation, Trondheim, Norway, Tapir, pp 275-295.
6. Count, B.M. and Evans, D.V.(1984).The influence of projecting side walls on the hydrodynamic performance of wave energy devices, Journal of Fluid Mechanics: 1984, 145, pp 361-376.
7. Malmo, O. and Reitan, A. (1986). Wave power absorption by an oscillating water column in a reflecting wall, Applied Ocean Research: 8(1),42-48.
8. McIver, P. and . D.V (1988). An approximate theory for the performance of a number of wave energy devices set into a reflecting wall. Applied Ocean Research,10(2), 58-65.
9. Zheng, W. (1989). Experimental Research and parameters optimization of a prototype OWC wave power device, Proceedings of the International Conference on Ocean Energy Recovery ‘89, pp 43-50.
10. Evans, D.V. and Porter, R. (1995). Hydrodynamic characteristics of an oscillating water column device, Applied Ocean Research, 18, pp155-164.
11. Ma. Q.W. (1995). Nonlinear analysis of hydrodynamic performance of oscillating water column wave energy device with a lateral opening, Offshore Mechanics and Arctic Engineering Conference Copenhagen, Denmark.
12. Korde, U.A. (1999). Efficient primary energy conversion in irregular waves. Ocean Engineering, 2, 625-651.
13. Boccotti, P. (2007). Caisson breakwaters embodying an OWC with a small opening –Part I: Theory, Ocean Engineering: 34, pp 806-819.
14. Boccotti, P., Filianoti, P., Fiamma, V. and Arena, F. (2007) Caisson breakwaters embodying an OWC with a small opening-Part II: A small -scale field experiment, Ocean Engineering: 34, pp 820-841.
15. Sarmento, A., and Thomas, G.(1993). Laboratory Testing of Wave Energy Devices, Wave Energy Converters Generic Technical Evaluation Study, Annex Report B1, Device Fundamentals/Hydrodynamics. C.E.C., Brussels. 16. Wang, D. J., Katory, M. and Li, Y.S. (2002). Analytical and experimental investigation on the hydrodynamic performance of onshore wave-power devices, Ocean Engineering 29, pp 871-885.
17. Thiruvenkatasamy, K. and Neelamani S. (1997). On the efficiency of wave energy caisson in array. Journal of Applied Ocean Research., Vol.19, pp 61-72.
18. Rapaka, E.V. (2007). Experimental investigation on a moored oscillating water column (MOWC) wave energy device, Ph.D. thesis, Ocean Engineering Department, Indian Institute of Technology Madras, Chennai.
19. Falnes, J. (2005). Ocean waves and oscillating systems. Cambridge University Press, ISBN 1139431935. 20. Koola P.M., Ravindran M. and Aswatha Narayan P.A. (1995). Model studies of Oscillating Water Column Wave energy device. Journal of Energy Engineering, 121, 14-27.
21. Zhang, Y., Zou, Q.P. and Greaves, D. (2012). Air-water two phase flow modeling of hydrodynamic performance of an oscillating water column device, Renewable Energy. 41,159-170.