Wave Control by Tide-Adapting Submerged Breakwater

Lee, Woo-Dong; Jeong, Yeon-Myeong; Hur, Dong-Soo

doi:10.26748/ksoe.2019.081

J. Ocean Eng. Technol.

2019

DOI: 10.26748/ksoe.2019.081

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Wave Control by Tide-Adapting Submerged Breakwater

Woo-Dong Lee¹,

Yeon-Myeong Jeong²,

Dong-Soo Hur³

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Cited by 2 publications

(1 citation statement)

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“…Time-domain numerical analysis and experimental studies have also been actively conducted. Lee et al (2019) conducted an experimental study on tide-adapting submerged breakwaters and reported that their wave-breaking performance is superior to that of ordinary submerged breakwaters. Lee et al (2002) conducted an experimental and numerical study on the distribution of vorticity, turbulence, and wave height according to the density, width, and arrangement of submerged rigid vegetation.…”

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confidence: 99%

Optimization Analysis of the Shape and Position of a Submerged Breakwater for Improving Floating Body Stability

Heo,

Koo,

Kim

2024

J. Ocean Eng. Technol.

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Submerged breakwaters can be installed underneath floating structures to reduce the external wave loads acting on the structure. The objective of this study was to establish an optimization analysis framework to determine the corresponding shape and position of the submerged breakwater that can minimize or maximize the external forces acting on the floating structure. A two-dimensional frequency-domain boundary element method (FD-BEM) based on the linear potential theory was developed to perform the hydrodynamic analysis. A metaheuristic algorithm, the advanced particle swarm optimization, was newly coupled to the FD-BEM to perform the optimization analysis. The optimization analysis process was performed by calling FD-BEM for each generation, performing a numerical analysis of the design variables of each particle, and updating the design variables using the collected results. The results of the optimization analysis showed that the height of the submerged breakwater has a significant effect on the surface piercing body and that there is a specific area and position with an optimal value. In this study, the optimal values of the shape and position of a single submerged breakwater were determined and analyzed so that the external force acting on a surface piercing body was minimum or maximum.

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mentioning

confidence: 99%

Optimization Analysis of the Shape and Position of a Submerged Breakwater for Improving Floating Body Stability

Heo,

Koo,

Kim

2024

J. Ocean Eng. Technol.

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Effects of Wave Breaking over Submerged Horizontal Plate on Solitary Wave Control

Lee¹,

Lee²,

Jeong³

et al. 2021

J Coast Disaster Prev

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A numerical analysis was performed to analyze the solitary wave control mechanism of a submerged horizontal plate (SHP). A two-dimensional numerical wave tank (NWT), which uses a wave generation method that generates a stable solitary wave, was employed for the numerical analysis. To verify the effectiveness of the NWT, the waveform measured around the SHP was compared to the calculated waveform. Moreover, the approximate and the calculated waveforms were compared in order to examine whether the solitary wave was stably generated. The results of comparison and verification showed that the deformation of the solitary wave by SHP was reproduced with high accuracy in the calculation, while the calculated waveform of NWT also showed a high degree of matching with the approximate waveform. The solitary wave breaking on the SHP satisfied the existing threshold condition A 0 /h c > 0.827-0.833, but breaking did not occur even under the condition A 0 /h c ＝1.2 when the width of the SHP was small. Accordingly, the wave height attenuation of the solitary wave occurred rapidly in a breaking condition. In a non-breaking condition, the energy gradually decreased due to the vorticity and turbulence around the boundary of the SHP, resulting in a gradual attenuation of the solitary wave.

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Wave Control by Tide-Adapting Submerged Breakwater

Cited by 2 publications

References 13 publications

Optimization Analysis of the Shape and Position of a Submerged Breakwater for Improving Floating Body Stability

Optimization Analysis of the Shape and Position of a Submerged Breakwater for Improving Floating Body Stability

Effects of Wave Breaking over Submerged Horizontal Plate on Solitary Wave Control

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