Caisson breakwaters embodying an OWC with a small opening—Part II: A small-scale field experiment

Boccotti, Paolo; Filianoti, Pasquale; Fiamma, Vincenzo; Arena, Felice

doi:10.1016/j.oceaneng.2006.04.016

Cited by 85 publications

(46 citation statements)

References 4 publications

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“…In the 1980s, Ojima et al [10] advocated the OWC-type breakwater. Afterward, the bottom-sitting OWC caisson breakwaters were studied by Takahashi et al [11], Thiruvenkatasamy and Neelamani [12], Tseng et al [13], Boccotti et al [14], Boccotti [15], etc. In 2011, the first commercial OWC caisson breakwater was successfully implemented at Mutriku, Spain [16].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of Pile-Supported OWC-Type Breakwaters: Energy Extraction and Vortex-Induced Energy Loss

Huang

2016

Energies

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Integrating wave energy converters with breakwaters is a promising concept for wave energy utilization. On the basis of fulfilling the wave protection demands, pile-supported Oscillating Water Column (OWC)-type breakwaters can also meet the local needs of electricity far from the lands. In the present study, the wave energy extraction and vortex-induced energy loss of pile-supported OWC-type breakwaters were analyzed based on a two-point measurement method. The importance of energy extraction and vortex-induced energy loss on the wave energy dissipation of pile-supported OWC-type breakwaters were experimentally investigated. It was found that the trends of energy extraction and vortex-induced energy loss were generally correlated. The effects of the pneumatic damping induced by top opening affected the vortex-induced energy loss more than the energy extraction. Results showed that a larger pneumatic damping was preferable for the purpose of increasing energy extraction, whereas for a smaller pneumatic damping the vortex-induced energy loss was more important to the energy dissipation. With increasing draft, the energy extraction decreased, but the vortex-induced energy loss complementally contributed to the total energy dissipation and made the energy dissipation at the same level as that for a shallower draft.

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Section: Introductionmentioning

confidence: 99%

An Experimental Study of Pile-Supported OWC-Type Breakwaters: Energy Extraction and Vortex-Induced Energy Loss

Huang

2016

Energies

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“…Research and development activity in this area has accelerated dramatically in recent years. A practical example is the new U-type OWC design recently developed by Boccotti (2007Boccotti ( , 2012Boccotti ( , 2015 and Boccotti et al (2007). This design shows dramatically improved absorption width for fixed installations and is currently being installed in breakwaters at several locations.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic analysis of oscillating water column wave energy devices

Bingham

Ducasse

Nielsen

et al. 2015

J. Ocean Eng. Mar. Energy

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A 40-chamber I-Beam attenuator-type, oscillating water column, wave energy converter is analyzed numerically based on linearized potential flow theory, and experimentally via model test experiments. The high-order panel method WAMIT by Newman and Lee (WAMIT; a radiation-diffraction panel program for wave-body interactions, 2014, http://www.wamit.com) is used for the basic wave-structure interaction analysis. The damping applied to each chamber by the power take off is modeled in the experiment by forcing the air through a hole with an area of about 1 % of the chamber water surface area. In the numerical model, this damping is modeled by an equivalent linearized damping coefficient which extracts the same amount of energy over one cycle as the experimentally measured quadratic damping coefficient. The pressure in each chamber in regular waves of three different height-tolength ratios is measured in the experiments and compared to calculations. The model is considered in both fixed and freely floating, slack-moored conditions. Comparisons are also made to experimental measurements on a single fixed

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“…The new plant is named REWEC (Resonant Wave Energy Converter), and it could be designed to reach the resonant condition under the waves conveying the greatest amount of wave energy at the fixed location. Two small-scale field experiments were carried out: in 2001 on the submerged caisson REWEC1 (REWECRealization 1), which also can work for the protection of the coast Boccotti, 2003), and in 2005 on the vertical breakwater REWEC3 (REWEC -Realization 3), which also can work as a harbor structure (Boccotti, 2007a, b;Boccotti, 2012a;Boccotti et al, 2007). Some important results were found from the experiment on REWEC3 in 2005.…”

Section: Laboratory and Experimental Activitymentioning

confidence: 99%

The Natural Ocean Engineering Laboratory, NOEL, in Reggio Calabria, Italy: A Commentary and Announcement

Arena

Barbaro

2013

Journal of Coastal Research

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Caisson breakwaters embodying an OWC with a small opening—Part II: A small-scale field experiment

Cited by 85 publications

References 4 publications

An Experimental Study of Pile-Supported OWC-Type Breakwaters: Energy Extraction and Vortex-Induced Energy Loss

An Experimental Study of Pile-Supported OWC-Type Breakwaters: Energy Extraction and Vortex-Induced Energy Loss

Hydrodynamic analysis of oscillating water column wave energy devices

The Natural Ocean Engineering Laboratory, NOEL, in Reggio Calabria, Italy: A Commentary and Announcement

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