Fixed absorbing semi-immersed breakwater

Brossard, J.; Jarno, Armelle; Marin, François; Tabet-Aoul, El-Hafid

doi:10.1016/s0378-3839(03)00044-9

Cited by 31 publications

(15 citation statements)

References 16 publications

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“…However, the reflection coefficient does not necessarily increases with the increasing value of a/d. This has also been observed in the experimental tests of Brossard et al (2003). This phenomenon should be carefully considered in practical design of partially immersed wave absorbing breakwaters.…”

Section: Results With Discussionmentioning

confidence: 82%

“…Thus the free water circulation between the open sea and the shelter region fails. An alternative wave absorbing breakwater is partially immersed perforated structures (e.g., Cox et al, 1998;Brossard et al, 2003). For this concept, the wave absorbing structure is fixed by plies and extends from above the sea surface to some distance above the seabed.…”

Section: Introductionmentioning

confidence: 99%

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The Interaction of Oblique Waves With a Partially Immersed Wave Absorbing Breakwater

Liu

2011

Int. Conf. Coastal. Eng.

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By considering obliquely incident waves, the hydrodynamic performance of a partially immersed wave absorbing breakwater is examined in this study. The breakwater consists of a perforated front barrier and a solid rear barrier. The two barriers are both partially immersed with the same draft. An analytical solution based on the linear potential theory is developed to calculate the reflection and transmission coefficients of the breakwater and the wave forces acting on the barriers. Some useful results are presented according to numerical examples. The present solution may be used at a preliminary design stage in practical engineering.

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Section: Results With Discussionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

The Interaction of Oblique Waves With a Partially Immersed Wave Absorbing Breakwater

Liu

2011

Int. Conf. Coastal. Eng.

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“…These rectangular structures are generally smaller in size and have impermeable walls around the water boundary. To reduce wave reflection in front of the structure, Brossard et al (2003) suggested adding an absorbing porous caisson at the seaside of the Y -type structure. They found that the great efficiency of such caisson on wave transmission characteristics was accompanied by a larger transfer of energy from the fundamental mode to the higher harmonics through non-linear processes due to the formation of strong vortices at the orifices of the perforated wall.…”

Section: (C) Caisson-typementioning

confidence: 99%

Hydrodynamic Performance of a Free Surface Semicircular Perforated Breakwater

Teh

Venugopal

Bruce

2011

Int. Conf. Coastal. Eng.

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The increasing importance of the sustainability challenge in coastal engineering has led to the development of free surface breakwaters of various configurations. In this study, the hydrodynamic characteristics of a perforated semicircular free surface breakwater (SCB) are investigated for irregular wave conditions. The hydrodynamic performance of the breakwater is evaluated in the form of transmission, reflection and energy dissipation coefficients, which are then presented as a function of the relative submergence depth (D/d) and the relative breakwater width (B/Lp), where D = the depth of immersion, d = the water depth, B = the breakwater width and Lp = the wavelength corresponding to the peak wave period. It is found that the wave attenuation ability of the SCB model improves with the increase of D/d and B/Lp. The SCB performs better as an energy dissipater than as a wave reflector. Based on the analysis of measured data, some empirical equations are proposed to predict the performance of the breakwater under varying submergence depths. The behaviour of wave transformation around and within the breakwater’s chamber is discussed. Also, the measured horizontal wave forces acting on the SCB are reported.

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“…Many mathematical derivations ([4]- [7]) and experiments ( [8]- [12]) have been done in the study of the hydrodynamic characteristics of floating breakwater. Parson and Martin ( [13]) established a high order singular integral equation, and studied the diffraction of the submerged horizontal plate by solving the discontinuous velocity potential on its both sides.…”

Section: Introductionmentioning

confidence: 99%

Flow field analysis of submerged horizontal plate type breakwater

2013

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Abstract-A submerged horizontal plate type breakwater is pointed out as an efficient wave protection device for cage culture in marine fishery. In order to reveal the wave elimination principle of this type breakwater, boundary element method is utilized to investigate this problem. The flow field and the trajectory of water particles are studied carefully. The flow field analysis shows that: the interaction of incident wave and adverse current above the plate disturbs the water domain drastically. This can slow down the horizontal velocity and vertical velocity of the water particles.Keywords-boundary element method, plate type breakwater, flow field analysis

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Fixed absorbing semi-immersed breakwater

Cited by 31 publications

References 16 publications

The Interaction of Oblique Waves With a Partially Immersed Wave Absorbing Breakwater

The Interaction of Oblique Waves With a Partially Immersed Wave Absorbing Breakwater

Hydrodynamic Performance of a Free Surface Semicircular Perforated Breakwater

Flow field analysis of submerged horizontal plate type breakwater

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