In the present study, the performance of two chamber nearshore oscillating water columns (OWCs) in finite water depth is analyzed based on the linearized water wave theory in the two dimensional Cartesian coordinate systems. The barriers are assumed to be fixed and the turbine characteristics are assumed linear with respect to the fluctuations of volume flux and pressure inside the chamber. The free surface inside the chambers is modeled as a non-plane wave surface. Two different mathematical models are employed to solve the hydrodynamic problem; the semi-analytic method of matched eigenfunction expansion and the numerical scheme of Boundary Integral Equation Method (BIEM). The numerical results are compared with the semi-analytic results and show good agreement. The effects of the distance between the barriers and the length of the barriers on the efficiency of the OWC device are investigated. The results of two chambers OWC are also compared with the results for an equivalent single OWC chamber. Further, the effect of the water depth on the capacity of the wave power absorption is discussed.
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ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
June 9–14, 2013
Nantes, France
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5542-3
PROCEEDINGS PAPER
Analytical and Numerical Study of Nearshore Multiple Oscillating Water Columns Available to Purchase
Kourosh Rezanejad,
Kourosh Rezanejad
Technical University of Lisbon, Lisbon, Portugal
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Joydip Bhattacharjee,
Joydip Bhattacharjee
Technical University of Lisbon, Lisbon, Portugal
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C. Guedes Soares
C. Guedes Soares
Technical University of Lisbon, Lisbon, Portugal
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Kourosh Rezanejad
Technical University of Lisbon, Lisbon, Portugal
Joydip Bhattacharjee
Technical University of Lisbon, Lisbon, Portugal
C. Guedes Soares
Technical University of Lisbon, Lisbon, Portugal
Paper No:
OMAE2013-11513, V008T09A098; 8 pages
Published Online:
November 26, 2013
Citation
Rezanejad, K, Bhattacharjee, J, & Guedes Soares, C. "Analytical and Numerical Study of Nearshore Multiple Oscillating Water Columns." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 8: Ocean Renewable Energy. Nantes, France. June 9–14, 2013. V008T09A098. ASME. https://doi.org/10.1115/OMAE2013-11513
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