Hydrodynamic performance of a T-shaped floating breakwater

Deng, Zhengzhi; Wang, Lin; Zhao, Xizeng; Huang, Zhiyong

doi:10.1016/j.apor.2018.11.002

Cited by 50 publications

(9 citation statements)

References 22 publications

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“…Masoudi and Zeraatgar (2016) employed the method of separation of variables, including eigen-function expansion method, in which radiation and diffraction problem is solved in three sub-domains in order to study hydrodynamic characteristics, such as added mass and damping coefficients as well as exciting forces, of a two-dimensional rectangular FB in water of finite depth and infinite domain. Deng et al (2019) used a semi-analytical method to study hydrodynamic performance of a T-type FB. The effects of the height and setup position of vertical screen on the dynamic response and hydrodynamic characteristics of the breakwater are discussed.…”

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confidence: 99%

Diffraction waves on large aspect ratio rectangular submerged breakwaters

Masoudi

Gan

2020

Ocean Engineering

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confidence: 99%

Diffraction waves on large aspect ratio rectangular submerged breakwaters

Masoudi

Gan

2020

Ocean Engineering

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“…Several researchers have investigated the problems of water wave interaction with the rigid/porous breakwaters using numerical and analytical approaches based on the linear wave-structure interaction theory (Hu et al [4], Deng et al [5], Koley et al [6], Koley and Panduranga [7]). Mei and Black [8] applied the variational method to study the scattering of gravity waves by rectangular surface-piercing and bottom-founded breakwater under the action of regular normal incident waves.…”

Section: Introductionmentioning

confidence: 99%

Oblique wave scattering by a rectangular porous floating breakwater with slotted screens over a sill-type seabed

Panduranga¹,

Koley²

2022

Int. J. CMEM

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In this work, oblique wave scattering by a rectangular porous breakwater with slotted screens floating over a sill-type seabed is examined within the frame of linear wave-structure interaction theory. The Sollitt and Cross model is used to analyze the fluid motion inside the rectangular porous breakwater. In addition, a quadratic pressure jump condition on the slotted screens is adopted to include the effect of wave height on wave attenuation by the slotted screens. The associated physical problem is handled using an iterative boundary element method. Finally, the scattering coefficients such as the reflection, transmission, energy loss coefficients, and wave forces acting on the rectangular porous structure are analyzed for different wave conditions. The time-dependent displacement profiles for the various instants of time are provided. Further, the influence of different geometries of sill-type bottoms on wave scattering is analyzed. The study concludes that the wave forces on the rectangular structure attain their maximum when the distance between the slotted screen and the porous structure is an integral multiple of the wavelength associated with the incident wave for different submergence drafts.

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“…On top of these four categories, three more types of floating breakwaters were introduced in [6]: frame-type, horizontal-plate type, and other types. Special crosssection shapes, such as inverse T-shape [7], π-shape [8], and twin horizontal cylinders [9] were also developed. In addition, floating breakwaters can be interconnected multibody systems.…”

Section: Introductionmentioning

confidence: 99%

“…−ω 2 (M + A(ω)) + iω(B ext + B(ω)) + (C + C ext ) X(ω) = F(ω) (7) with M the inertia matrix, A(ω) the added mass matrix, B ext the external damping matrix, and B(ω) the potential damping matrix. C is the hydrostatic restoring force and moment matrix, and C ext is the external stiffness matrix, representing the effect of the mooring system.…”

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Effectiveness of Floating Breakwater in Special Configurations for Protecting Nearshore Infrastructures

Zhang

Magee

2021

JMSE

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This paper investigates the effectiveness of floating breakwaters consisting of two barges (L-shape), three barges (U-shape), four barges (barge frame), and conventional single floating breakwater. The floating breakwaters of different spatial layouts have sheltered internal gaps/moonpools when compared to their conventional counterparts. The motions of these floating breakwaters and their effectiveness in wave transmission and motion reduction of the protected floating bodies are evaluated. The study is conducted based on a subsystem of a floating hydrocarbon storage facility that combines a floating breakwater with two floating tanks, studied previously. Numerical models based on linear potential flow theory are built for these floating breakwaters with and without the floating tanks. The numerical models of the barge frame are validated through laboratory experiments, and the dipole damping lids to reduce the resonant fluid motions in the gaps/moonpools are calibrated with experimental results. The L-shape floating breakwater is found effective in reducing wave transmissions without the presence of the floating tanks, while the barge frame is the most effective in the motion reduction of the floating tanks. In addition, significant fluid resonant motions are identified for all investigated floating breakwaters, including the conventional one. Orienting the structure obliquely can improve the performance of the floating breakwaters of special configurations, especially the barge frame. The results and findings show the importance of considering the protected floating structures in the analysis when designing floating breakwaters for many types of marine structures, including floating fish farms and floating cities in coastal waters.

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Hydrodynamic performance of a T-shaped floating breakwater

Cited by 50 publications

References 22 publications

Diffraction waves on large aspect ratio rectangular submerged breakwaters

Diffraction waves on large aspect ratio rectangular submerged breakwaters

Oblique wave scattering by a rectangular porous floating breakwater with slotted screens over a sill-type seabed

Effectiveness of Floating Breakwater in Special Configurations for Protecting Nearshore Infrastructures

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