Hydraulic performance and wave loadings of perforated/slotted coastal structures: A review

Huang, Zhenhua; Liu, Yucheng; Liu, Yong

doi:10.1016/j.oceaneng.2011.03.002

Cited by 210 publications

(71 citation statements)

References 66 publications

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“…Such a coefficient assumes a maximum fixed value for vertical wall breakwaters: C r = 0.9 independently from the characteristics of waves [32]. On the contrary, reflection coefficient assumes lower and variable values for Jarlan type caissons [33] and combined caisson with internal rubble mound [34,35], as function of the characteristics of waves and structures. Reflection coefficient behavior for OWC breakwaters is similar to that of Jarlan type caissons.…”

Section: Reflection Coefficientmentioning

confidence: 99%

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

2016

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A feasibility study for installing Wave Energy Converters (WECs) in a Mediterranean port is presented here. The final aim is to evaluate the possibility of building a green touristic infrastructure in a site having ordinary wave energy. In particular, the site of interest is Giardini Naxos, which is located in the northern Ionian coast of the island of Sicily (Italy). A preliminary estimation of the available energy has been carried out. The chosen type of WEC device is the Oscillating Water Column (OWC) system, which is found here to allow for good integration with the vertical breakwater needed for the extension of the existing port. Its feasibility is evaluated from the structural and economic point of view. Towards this aim, the system is tested in the laboratory for estimating the reflection coefficients and the pressures on the structure, which allow us to carry out the optimization of the OWC breakwater. Furthermore, the air turbine noise is estimated and an attenuation chamber is designed to reduce such noise to within acceptable levels. The economic feasibility study allows for an evaluation of the recuperation period of the investment, which is slightly less than the service life of the WEC device.

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Section: Reflection Coefficientmentioning

confidence: 99%

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

2016

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“…Now a perforated caisson breakwater with five chambers is being constructed for the Dalian Chemical Production Terminal, China [2].…”

Section: Solid Wallmentioning

confidence: 99%

Interaction between obliquely incident waves and an infinite array of multi-chamber perforated caissons

Liu

Teng

2011

J Eng Math

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This study examines the interaction of obliquely incident waves with a breakwater consisting of an infinite array of uniform multi-chamber perforated caissons with partition walls. Based on the linear potential theory, an analytical solution of the problem is developed by means of the matched eigenfunction expansion method. The periodicities of the breakwater and the incident waves are both incorporated into the solution. Several limiting cases are also examined to validate the newly developed solution. Three parameters of engineering interests, the reflection coefficient, the dimensionless total wave force in the normal direction of the breakwater and the dimensionless total wave force acting on the partition walls, are calculated and carefully examined. This study may give a better understanding of the hydrodynamic performance of multi-chamber perforated caissons. Some useful results are also presented to practical engineering.

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“…Huang [9] proposed an empirical expression for RT coefficients of wave interaction with one or two rows of rectangular cylinders. To the best knowledge of the authors and also raised by a review paper [10], the literature related to water waves interacting with submerged barriers is relatively rare, especially under solitary waves.…”

Section: Introductionmentioning

confidence: 99%

Propagation of Solitary Waves over Double Submerged Barriers

Hsiao

2017

Water

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Protection of nearshore area by means of artificial structure is an important issue for coastal engineering community. In this study, we aim to investigate wave hydrodynamics and hydrodynamic performance due to solitary waves interacting with double submerged barriers. Double barriers, put bottom-mounted vertically on the flat seafloor and also paralleled to each other, are considered as a wave absorber. New experiments are carried out to provide measured data for model validation. Numerical simulations are performed using a depth-and phase-resolving model, based on the Reynolds-Averaged Navier-Stokes equations with a non-linear k- Abstract: Protection of nearshore area by means of artificial structure is an important issue for coastal engineering community. In this study, we aim to investigate wave hydrodynamics and hydrodynamic performance due to solitary waves interacting with double submerged barriers. Double barriers, put bottom-mounted vertically on the flat seafloor and also paralleled to each other, are considered as a wave absorber. New experiments are carried out to provide measured data for model validation. Numerical simulations are performed using a depth-and phase-resolving model, based on the Reynolds-Averaged Navier-Stokes equations with a non-linear k-ɛ turbulence closure model. Model-data comparisons show good agreements in terms of free surface fluctuations in time histories and error analyses are performed. Numerical results are then used to study the variations of the free surface motions of breaking waves and the flow fields. In particular, the model results reveal that the optimal horizontal distance, judged as minimum wave transmission, between two submerged barriers is approximately 2.5 times the still water depth for present wave conditions and obstacle geometries. Furthermore, numerical model is extended to evaluate the functional efficiency of a dual-slotted-barrier system with different obstacle configurations under various conditions of solitary waves by means of energy reflection, transmission and dissipation coefficients.

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Hydraulic performance and wave loadings of perforated/slotted coastal structures: A review

Cited by 210 publications

References 66 publications

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port

Interaction between obliquely incident waves and an infinite array of multi-chamber perforated caissons

Propagation of Solitary Waves over Double Submerged Barriers

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