2D-V hydrodynamics of wave–floating breakwater interaction

Koftis, Theoharris; Prinos, P.; Koutandos, E. V.

doi:10.1080/00221686.2006.9521697

Cited by 16 publications

(2 citation statements)

References 18 publications

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“…Rogers, Dalrymple, & Stansby, 2010) or floating breakwaters (e.g. Huang, He, & Zhang, 2014;Koftis, Prinos, & Koutandos, 2006), wave action on ships or off-shore platforms (e.g. Zhao, Ye, Fu, & Cao, 2014), wave energy recovery systems (e.g.…”

Section: Introductionmentioning

confidence: 99%

A fictitious domain approach based on a viscosity penalty method to simulate wave/structure interaction

Ducassou

Núñez

Cruchaga

et al. 2017

Journal of Hydraulic Research

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This work presents an original numerical model for a free surface flow interacting with a spring-block system. The formulation is based on the fictitious domain approach and a penalty method on viscosity to describe the rigid solid motion. The incompressible Navier-Stokes equations are solved in the whole domain and the free surface and the body contour are captured using a Volume of Fluid method. To describe the rigid body motion, a single degree of freedom model, able to represent translation or rotation, is embedded in the code. The discrete equations are written in a well known finite volume framework over Cartesian grids. In such a context, the external spring and damping forces are represented as body forces in the solid region. The proposed strategy is tested in a sloshing damping system. The numerical results are compared with experimental data obtained within the present study. Finally, the method is used to simulate a wave energy converter system as an illustration of a rotational case.

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Section: Introductionmentioning

confidence: 99%

A fictitious domain approach based on a viscosity penalty method to simulate wave/structure interaction

Ducassou

Núñez

Cruchaga

et al. 2017

Journal of Hydraulic Research

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“…They observed that a vertical plate, protruding downward from the front of the FB, significantly enhanced the efficiency of the structure, increasing dissipation and therefore reducing transmission. Koftis et al (2006) showed that, by numerical simulation, protruding plates act as turbulent energy sources, which dissipate wave energy.…”

Section: Introductionmentioning

confidence: 99%

Formula to Predict Transmission for π-Type Floating Breakwaters

Ruol

Martinelli

Pezzutto

2013

J. Waterway, Port, Coastal, Ocean Eng.

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The aim of this paper is to define a simple and useful formula to predict wave transmission for a common type of floating breakwater (FB), supplied with two lateral vertical plates protruding downward, named p-type FB. Eight different models, with mass varying from 16 to 76 kg, anchored with chains, have been tested in the wave flume of the Maritime Laboratory of Padova University, under irregular wave conditions. Water elevation in front and behind the structure has been measured with two arrays of four wave gauges. Our starting point for the prediction of wave transmission was the classical relationship established by Macagno in 1954. His relationship was derived for a box-type fixed breakwater assuming irrotational flow. Consequently, he significantly underestimated transmission for short waves and large drafts. This paper proposes an empirical modification of his relationship to properly fit the experimental results and a standardized plotting system of the transmission coefficient, based on a simple nondimensional variable. This variable is the ratio between the peak period of the incident wave and an approximation of the natural period of the heave oscillation. A fairly good accuracy of the prediction is found analyzing the data in the literature relative to variously moored p-type FBs, tested in small-scale wave tanks under regular and irregular wave conditions.

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2007

Hydrological Processes

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2D-V hydrodynamics of wave–floating breakwater interaction

Cited by 16 publications

References 18 publications

A fictitious domain approach based on a viscosity penalty method to simulate wave/structure interaction

A fictitious domain approach based on a viscosity penalty method to simulate wave/structure interaction

Formula to Predict Transmission for π-Type Floating Breakwaters

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