Feaseability Study of a Wec Integrated in the Port of Giardini Naxos, Italy

Naty, Stefania; Viviano, Antonino; Foti, Enrico

doi:10.9753/icce.v35.structures.22

Cited by 9 publications

(3 citation statements)

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“…Castillo et al [45], Dai Viet et al [46], Prasad Kumar [47], Suh et al [19], and Galiatsatou & Prinos [48] selected optimized geometries of rubble mound or caisson breakwaters combining structural reliability and methods of economic optimization. In this framework possible economic benefits from including Wave Energy Converters as part of the upgrading scheme (e.g., [49]) could be considered, yet only in cases of low energy sea-sates. Van Gelder et al [50] provided an outline of methods and tools for reliability analysis of flood defenses.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimized Reliability Based Upgrading of Rubble Mound Breakwaters in a Changing Climate

Γαλιατσάτου¹,

Makris²,

Prinos³

2018

JMSE

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The present work aims at presenting an approach on implementing appropriate mitigation measures for the upgrade of rubble mound breakwaters protecting harbors and/or marinas against increasing future marine hazards and related escalating exposure to downtime risks. This approach is based on the reliability analysis of the studied structure coupled with economic optimization techniques. It includes the construction of probability distribution functions for all the stochastic variables of the marine climate (waves, storm surges, and sea level rise) for present and future conditions, the suggestion of different mitigation options for upgrading, the construction of a fault tree providing a logical succession of all events that lead to port downtime for each alternative mitigation option, and conclusively, the testing of a large number of possible alternative geometries for each option. A single solution is selected from the total sample of acceptable geometries for each upgrading concept that satisfy a probabilistic constraint in order to minimize the total costs of protection. The upgrading options considered in the present work include the construction or enhancement of a crown wall on the breakwater crest, the addition of the third layer of rocks above the primary armor layer of the breakwater (combined with crest elements), the attachment of a berm on the primary armor layer, and the construction of a detached low-crested structure in front of the breakwater. The proposed methodology is applied to an indicative rubble mound breakwater with an existing superstructure. The construction of a berm on the existing primary armor layer of the studied breakwater (port of Deauville, France), seems to be advantageous in terms of optimized total costs compared to other mitigation options.

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Section: Literature Reviewmentioning

confidence: 99%

Optimized Reliability Based Upgrading of Rubble Mound Breakwaters in a Changing Climate

Γαλιατσάτου¹,

Makris²,

Prinos³

2018

JMSE

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“…These locations are associated with many disadvantages such as a lower wave power due to shallow water and shallowing effects, tidal range, and shoreline geography . However, several studies were carried out in order to assess the feasibility of WECs in low energetic sites . Integrating of an OWC device into a breakwater or part of the harbour is an investment that could be a solution that would make WECs competitive with other renewable energy technologies; this would be a significant step forward in terms of OWC device deployment …”

Section: Introductionmentioning

confidence: 99%

Multi-chamber oscillating water column wave energy converters and air turbines: A review

2018

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Summary The oscillating water column (OWC) is a more common type of wave energy converter (WEC) that has been the subject of the study and development for several decades. Multi–chamber oscillating water column (MC–OWC) devices or arrays have the advantage of being more efficient in energy extraction compared to a single chamber system, particularly in more chaotic sea states. A variety of single and array OWC devices have been proposed and studied on a small–scale, whereas few large–scale devices have been tested under ocean wave conditions. This paper provides a concise review of the current state of MC–OWC device development in laboratory conditions. The review highlights explicitly the main stages of MC–OWC device development for one ongoing study as an example. This review was based on the available information in the literature from 2003 to 2012, in addition, further work is presented as part of the current study at the University of Technology Sydney. This study is from 2015 to 2018. The discussion shows the challenges that a device needs to overcome to be more competitive with other WECs in the global of wave energy converter area.

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“…Most WECs are currently in the pre-commercial stage; thereforethe major concern at this stage is efficiency and several works have been carried out with respect to design optimization. For example, since physical modelling is widely applied in the optimization of OWC devices, Viviano [3,4] studied the difference between the nonlinear results of small scale model and largescale model, which contributes to correct the scale effect of the results obtained from physical model experiments. Falcão [5] and Gomes [6] concentrate on improving the performance of a floating OWC spar buoy by optimizing the tube geometry and turbine characteristic.…”

Section: Introductionmentioning

confidence: 99%

A Shape Optimization Method of a Specified Point Absorber Wave Energy Converter for the South China Sea

et al. 2018

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In this paper, a shape optimization method of a truncated conical point absorber wave energy converter is proposed. This method converts the wave energy absorption efficiency into the matching problem between the wave spectrum of the South China Sea and the buoy’s absorption power spectrum. An objective function which combines these two spectra is established to reflect the energy absorbing efficiency. By applying Taguchi design, the frequency domain hydrodynamic analysis and the response surface method (RSM), the radius, cone angle and draft of the buoy are optimized. Since the significant influence of power take-off system (PTO) on energy absorption, the optimal PTO damping under random wave conditions is also studied. The optimal shape is acquired by maximizing the energy absorbing efficiency. Four types of performance and the influence of each geometrical parameter are also obtained. In addition, the cause of the trend of performance as well as the effects of adjusting the input parameters are analyzed. This study can provide guidance for the shape optimization of multi-parameter buoys.

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Feaseability Study of a Wec Integrated in the Port of Giardini Naxos, Italy

Cited by 9 publications

References 0 publications

Optimized Reliability Based Upgrading of Rubble Mound Breakwaters in a Changing Climate

Optimized Reliability Based Upgrading of Rubble Mound Breakwaters in a Changing Climate

Multi-chamber oscillating water column wave energy converters and air turbines: A review

A Shape Optimization Method of a Specified Point Absorber Wave Energy Converter for the South China Sea

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