Wave reflection from coastal structures in design conditions

Zanuttigh, Barbara; Meer, Jentsje W. van der

doi:10.1016/j.coastaleng.2008.02.009

Cited by 93 publications

(79 citation statements)

References 18 publications

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“…Recently, Zanuttigh and van der Meer [33] have developed a new estimation formula for various types of structures. This formula allows one to estimate K r once known: incident wave characteristics (H m0 and T m−1,0 ) at the structure toe, the slope of the structure (α) and roughness coefficient γ f :…”

Section: Reflectionmentioning

confidence: 99%

Hydraulic Performance of an Innovative Breakwater for Overtopping Wave Energy Conversion

Iuppa

Contestabile²,

Cavallaro

et al. 2016

Sustainability

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Abstract:The Overtopping BReakwaterfor Energy Conversion (OBREC) is an overtopping wave energy converter, totally embedded in traditional rubble mound breakwaters. The device consists of a reinforced concrete front reservoir designed with the aim of capturing the wave overtopping in order to produce electricity. The energy is extracted through low head turbines, using the difference between the water levels in the reservoir and the sea water level. This paper analyzes the OBREC hydraulic performances based on physical 2D model tests carried out at Aalborg University (DK). The analysis of the results has led to an improvement in the overall knowledge of the device behavior, completing the main observations from the complementary tests campaign carried out in 2012 in the same wave flume. New prediction formula are presented for wave reflection, the overtopping rate inside the front reservoir and at the rear side of the structure. Such methods have been used to design the first OBREC prototype breakwater in operation since January 2016 at Naples Harbor (Italy).

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Section: Reflectionmentioning

confidence: 99%

Hydraulic Performance of an Innovative Breakwater for Overtopping Wave Energy Conversion

Iuppa

Contestabile²,

Cavallaro

et al. 2016

Sustainability

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“…Consistently a rather high best fit value of P (0.9) has been found. The Zanuttigh and van der Meer (2008) gives a reasonable predictions when its shape parameters a and b are properly calibrated. However, some more scatter has been obtained compared to other formulae here investigated, realistically due to the linearization of the incident spectrum.…”

Section: Discussionmentioning

confidence: 99%

“…This likely because when the surf-similarity parameter is still relatively low (say less than 6), the off-shore slope is still expected to be a primary variable, whereas it is not included at all in the predictive equation. The second step of the comparison is about the Zanuttigh and van der Meer (2008) formula. This equation comes from the analysis of a huge amount of experimental data, mostly gathered in the frame of the EU projects CLASH and DELOS.…”

Section: Wave Reflectionmentioning

confidence: 99%

Wave Run-Up and Reflection at Rubble Mound Breakwaters With Ecopode Armor Layer

Calabrese

Buccino

Ciardulli

et al. 2011

Int. Conf. Coastal. Eng.

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In 2008 the authors verified the hydraulic stability of a coastal defense project to be built along the NW coast of Sicily (Italy, Tomasicchio et al., 2009). The intervention consisted of shore parallel barriers armored with a relatively new eco-friendly system: ECOPODE TM . In that context the idea arose of conducting an exhaustive experimental campaign on the " hydraulic response " of these units, including wave run-up , wave overtopping, wave transmission and wave reflection observations. The latter has been performed in 2010 at the LInC Laboratory of University of Naples "Federico II". In this paper results on wave run-up and reflection are presented and discussed.

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“…The second term at the right hand side is a well established expression of coastal engineering to predict wave reflection at smooth slopes [24]; here, ξ 0 is the surf similarity parameter: …”

Section: Reflection Performancementioning

confidence: 99%

“…In case of structures with a segmented front face (like SSGs), an equivalent slope, say α eq , has to be used. In [24] the latter has been calculated as the weighted average of the mean slope in the run-up/run-down area (α incl ) and the slope of the approach ramp, α r (Figure 16). …”

Section: Reflection Performancementioning

confidence: 99%

The SSG Wave Energy Converter: Performance, Status and Recent Developments

et al. 2012

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Abstract:The Sea-wave Slot-cone Generator (SSG) is a Wave Energy Converter based on the wave overtopping principle; it employs several reservoirs placed on top of each other, in which the energy of incoming waves is stored as potential energy. Then, the captured water runs through turbines for electricity production. The system works under a wide spectrum of different wave conditions, giving a high overall efficiency. It can be suitable for shoreline and breakwater applications and presents particular advantages, such as sharing structure costs, availability of grid connection and recirculation of water inside the harbor, as the outlet of the turbines is on the rear part of the system. Recently, plans for the SSG pilot installations are in progress at the Svaaheia site (Norway), the port of Hanstholm (Denmark) and the port of Garibaldi (Oregon, USA). In the last-mentioned two projects, the Sea-wave Slot-cone Generator technology is integrated into the outer harbor breakwater and jetty reconstruction projects. In the last years extensive studies have been performed on the hydraulic and the structural response of this converter, with the aim of optimizing the design process. The investigations have been conducted by physical model tests and numerical simulations and many results have been published on both conference proceedings and journals. The main scope of this paper is reviewing the most significant findings, to provide the reader with an organic overview on the present status of knowledge. T m = time domain mean wave period (s). T p = peak wave period (s). WAB = Wave Activated Bodies. WEC = Wave Energy Converter. Greek Letters:α r = front ramp angle on the horizontal (deg.). α eq. = equivalent front angle for reflection analysis. α incl = mean front slope in the run-up area. Δ = duration of a sea-state (s or hr.).

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Wave reflection from coastal structures in design conditions

Cited by 93 publications

References 18 publications

Hydraulic Performance of an Innovative Breakwater for Overtopping Wave Energy Conversion

Hydraulic Performance of an Innovative Breakwater for Overtopping Wave Energy Conversion

Wave Run-Up and Reflection at Rubble Mound Breakwaters With Ecopode Armor Layer

The SSG Wave Energy Converter: Performance, Status and Recent Developments

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