نتایج جستجو برای: breakwater

تعداد نتایج: 1176  

Journal: :Journal of Marine Science and Engineering 2022

Punta Langosteira port, located in A Coruña (Spain), was monitored during the winters of 2017 and 2018, measuring wave pressure crown wall structure. Furthermore, metocean variables were measured on a buoy very close to breakwater. This paper presents real pressures at breakwater different storm events. These values are compared with results application state-of-the-art equations for calculatio...

Journal: :Energy 2021

In the multifunctional system consisting of point absorber wave energy converters and a pontoon breakwater, breakwater plays an essential role in attenuating waves on lee side amplifying for better harvesting stoss side. The structure is expectedly improved to enhance its attenuation amplification at same time. Here we present novel parabolic arc show that range typical regular incident waves, ...

Journal: :Advances in technology innovation 2022

This research is conducted to examine the transmission wave and energy dissipation of a box culvert-type slotted breakwater, which designed as breakwater structure with watertight wall at top culvert type hole bottom. The process involves physical modeling this in laboratory. parameters are varied determine performance. results show that coefficient (KT) value reduced relative height (hL/d) dec...

2016
Tetsuro Goda Mitsuteru Asai

The clarification on the collapse mechanism of a caisson breakwater has been an urgent task in order to reduce damages caused by next millennium tsunamis. In this study, piping destruction of a mound induced by seepage flow is taken into consideration solely. A stabilized ISPH method proposed by Asai (2012) is adopted with some modification associated with the extended Darcy law (Akbari 2013, 2...

1988
James T. Kirby

A recent development of a parabolic equation method for wave propagation in a non-orthogonal coordinate system is reviewed. A transformation of the full governing equation prior to development of any approximation leads to a model whose results stand in closer agreement to laboratory data for a case of waves propagating into a breakwater harbor. The effect of amplitude dispersion on predicted w...

2007
James T. Kirby Robert A. Dalrymple

A semi-empirical model for surf zone wave height decay is adapted to the parabolic equation method in order to include the effect of depth-limited wave breaking in combined refraction/diffraction calculations. Several examples for plane beaches are presented in order to show correspondence between the empirical model, its numerical formulation, and previous laboratory data. The model is then ap...

Journal: :Renewable & Sustainable Energy Reviews 2022

Combining multiple-types of Wave Energy Converters (WECs) and integrating them into in-development or pre-existing marine platforms can reduce the total Levelised Cost (LCoE) by sharing infrastructures maintenance costs. The current study proposes an innovative multi-purpose solution deploying Oscillating Buoy (OB) device inside chamber Water Column (OWC) WEC integrated a π-type floating breakw...

2011
T. V. Heath

This paper considers the history of oscillating water column (OWC) systems from whistling buoys to grid-connected power generation systems. The power conversion from the wave resource through to electricity via pneumatic and shaft power is discussed in general terms and with specific reference to Voith Hydro Wavegen’s land installed marine energy transformer (LIMPET) plant on the Scottish islan...

2006
Shuxue Liu Bing Sun

Based on the linear wave theory, the mild-slope equation (MSE) is a preferable mathematical model to simulate the wave propagation nearshore. On the basis of developed self-adaptive finite element model, an interative method is used to determine the wave direction angle to the boundary and to improve the treatment of the boundary conditions. Thus a numerical model to solve MSE is developed in t...

Journal: :Coastal Engineering Proceedings 1980

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