Experimental and numerical investigation of WEC-type floating breakwaters: A single-pontoon oscillating buoy and a dual-pontoon oscillating water column

Cheng, Yong; Fu, Lei; Dai, Saishuai; Collu, Maurizio; Ji, Chunyan; Yuan, Zhiming; Incecik, Atilla

doi:10.1016/j.coastaleng.2022.104188

Cited by 68 publications

(10 citation statements)

References 36 publications

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“…Overall, OBWEC performs better. Power and conversion efficiency of the WECs in the references: (a) P of WECs [40,45,75,89,97,103,104,107,109], (b) conversion efficiency of WECs under physical test [11,41,[54][55][56][57][58][59]79,[81][82][83]96,98,108], and (c) conversion efficiency of WECs under numerical simulation [1,6,62,[68][69][70]75,79,[84][85][86][87][88][89][90][91][92]101,105,110]. Note: Except for the maximum values in references [45,76,89], the other values are the average power generation (the approximate words such as 'stable' and 'maintenance' in the reference are regarded as average).…”

Section: Discussionmentioning

confidence: 99%

“…The Coulomb damping model performs well in wave energy captured efficiency, and the maximum conversion efficiency (η 2 ) was 34.9%. Yong et al [91] used a three-dimensional numerical flume to analyze the energy extraction of the moonpool WEC breakwater, and the maximum conversion efficiency (η 2 ) could reach 45%. Zhou et al [92] studied the effects of PTO damping, asymmetry and absolute asymmetry on the energy conversion efficiency and wave attenuation of PTO-integrated breakwaters.…”

Section: Oscillating Float Wec (Ofwec)mentioning

confidence: 99%

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Research on Wave Energy Converters

Lian,

Wang,

Wang

et al. 2024

Energies

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With the acceleration of the global warming process, the clean energy crisis is becoming serious; conventional energy is unlikely to solve the current crisis, so people pay attention to new energy. As wave energy is widely distributed, renewable, and clean, hundreds of wave energy converters emerge. In order to understand the research progress of wave energy converters better, this paper divides wave energy converters into overtopping type, oscillating water column type, and oscillating body type according to the working principle and divides the oscillating body type into oscillating float type and oscillating pendulum type by different ways of energy capture. Based on the classification, various types of engineering cases, physical tests and digital simulation, and other academic research results are summarized, especially the generation power and energy conversion efficiency of various devices, and some shortcomings and suggestions are put forward, hoping to provide help for readers to study wave energy generation converters.

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Section: Discussionmentioning

confidence: 99%

Section: Oscillating Float Wec (Ofwec)mentioning

confidence: 99%

Research on Wave Energy Converters

Lian,

Wang,

Wang

et al. 2024

Energies

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“…The study demonstrated that the proposed solution benefited both wave energy conversion and transmitted wave attenuation. Also, Cheng et al [136] compared experimentally and numerically the hydrodynamic performance of an OWC-type dual pontoon-and an oscillating buoy-type single pontoon floating breakwater. Here, the displacements and the total pontoon widths were kept the same for the two hybrid systems.…”

Section: Classes Of Owcsmentioning

confidence: 99%

Floating Oscillating Water Column Wave Energy Converters: A Review of Developments

Konispoliatis

2024

J Energ Power Technol

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The main challenge in designing offshore renewable energy structures is to ensure their structural integrity on a life cycle basis while operating in harsh environments and, in parallel, being financially competitive and environmentally friendly concerning other types of energy systems. The Oscillating Water Column (OWC) converters are among the first energy converters to be developed and deployed into the sea due to their relative simplicity of operation and relatively small number of moving parts. This review provides an overview of the recent floating OWC prototypes and projects and the latest research developments in wave energy conversion using the oscillating water column principle. Furthermore, critical structural advances are discussed, mainly focusing on the converter’s geometry and type and its mooring system design towards amplifying the absorbed wave power.

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“…It was found that wave resonance in the gap would lead to a sudden reduction of wave energy harvesting efficiency. Following this study, Cheng et al [43] compared the power extraction and wave attenuation performance of an OWC-type dual-pontoon breakwater and an OB-type single-pontoon breakwater. The study concluded that the hydrodynamic performance of the OWC-type breakwater is superior to that of the OB-type breakwater with the same pontoon width and mass.…”

Section: Introductionmentioning

confidence: 99%

Wave Energy Conversion by an Array of Oscillating Water Columns Deployed Along a Long-Flexible Floating Breakwater

Cheng,

Du,

Dai

et al. 2023

Preprint

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Experimental and numerical investigation of WEC-type floating breakwaters: A single-pontoon oscillating buoy and a dual-pontoon oscillating water column

Cited by 68 publications

References 36 publications

Research on Wave Energy Converters

Research on Wave Energy Converters

Floating Oscillating Water Column Wave Energy Converters: A Review of Developments

Wave Energy Conversion by an Array of Oscillating Water Columns Deployed Along a Long-Flexible Floating Breakwater

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