Experimental study on the wave dissipation performance and mooring force of porous floating breakwater

Zheng, Yanna; Liu, X M; Chen, C P; Jiang, Yunpeng; Zhang, C W

doi:10.1088/1755-1315/189/2/022058

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…Isaacson et al, (1996), carried out an experimental investigation on the reflection of obliquely incident waves from a model rubblemound breakwater of single slice. N Zheng et al, (2018) Breakwater on wave transmission. From the review of many related published literature in this field, it is acknowledged that more information are needed from both in the laboratory and the field for the efficient application, development and design of promising vertical porous structures as coastal engineering solutions in the field.…”

Section: Introductionmentioning

confidence: 99%

Performance of Using Porous Floating Cylindrical Breakwater with Different Porosities as a Wave Energy Dissipater in Experimental Study

Saie¹

2019

ASSRJ

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Floating breakwaters are commonly used to protect shorelines, marine structures and harbors from wave attacks. Through the physical model test method, the wave energy dissipation performance by using porous floating cylindrical breakwater under regular waves. This research content in this paper for a horizontal cylindrical pipe with different diameters and with different percentage of porosity working as a single pipe or as a group. Which contains five different models with diameters (2 inch, 3 inch, 4 inch, (3&4 inch together) and (2, 3 & 4 inch together) by choosing different percentage of porosities (15, 30 & 50%) to achieve maximum energy dissipation with minimum transmitted energy. The experiments were carried out in a recirculating open channel flume located at the Hydraulics Engineering Laboratory, Higher Institute of Engineering in El Shorouk City.

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Section: Introductionmentioning

confidence: 99%

Performance of Using Porous Floating Cylindrical Breakwater with Different Porosities as a Wave Energy Dissipater in Experimental Study

Saie¹

2019

ASSRJ

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“…Based on the concept of maximum wave energy dissipation, floating breakwater research will continue to develop to produce effective and efficient performance. Some researchers have conducted studies of floating breakwaters in the porous form in various types, namely porous pontoons [44,45], porous boxes [19,46], porous plate [47][48][49], porous pipe/cylinder [50][51][52], and saw porous [18,20].…”

Section: Literature Review / Pregled Literaturementioning

confidence: 99%

“…So that in the fl oating breakwater design, the minimum cross-section and the interaction eff ect become an essential reference to produce a fl oating breakwater with the slightest motion response [18]. The study of the shape of the porous structure is very benefi cial because, in addition to being able to dampen waves, the wave energy received by the structure and the mooring line becomes small [19,20].…”

Section: Introduction / Uvodmentioning

confidence: 99%

Numerical Modeling of Hydrodynamic Performance on Porous Slope Type Floating Breakwater

Sujantoko,

Djatmiko,

Wardhana

et al. 2023

Naše more

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A breakwater is a coastal building that aims to break up or withstand wave energy that enters the beach so that the characteristics of the incoming waves are by calculations and can reduce abrasion on the shoreline. Designing a floating breakwater is very complicated because it depends on many aspects. These fundamental aspects depend on each other, so if one of these aspects changes, the integrity of the floating breakwater structure will also change. One of these aspects is the magnitude of the transmission and reflection coefficients generated by the floating breakwater. This research will study the hydrodynamic performance of floating breakwater due to variations in slope and porosity in reducing and reflecting waves with computational fluid dynamics (CFD). The slope-porous floating breakwater dimension is based on previous experimental data, including a constant water depth of 0.75 m, a wave height of 0.05 - 0.125 m, and a wave period of 1.1 - 2 sec on regular waves. The results of the numerical model validation and experiments on all variations of the floating breakwater model are quite good, which is less than 10% for both wave transmission and reflection. Analysis of the influence of changes in the mooring line angle, the simulation is carried out at an angle of 30 deg to 90 deg and produces an average transmission coefficient of 0.79 and a reflection of 0.21. While the effect of changes in water level elevation (0.85 m, 0.75 m, and 0.65 m) gives a reasonably significant average transmission coefficient of 0.85 and a reflection of 0.13. The mooring line angle will be gentler at high tide, and the transmission and reflection coefficients will be higher. However, the mooring line will loosen at low tide, causing the structure to move more freely and eliminating the function of the floating breakwater itself so that the tidal phenomenon becomes a challenge for coastal experts in designing structures to produce effective and efficient hydrodynamic performance.

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“…Analytically Liu & Li, (2013) presented a solution of the reflection wave equations and transmission wave equations for porous breakwaters. In general, the effectiveness of the breakwater is shown by the smaller the reflection coefficient (𝐾 𝑟 ) and transmission coefficient (𝐾 𝑡 ), and the larger the dissipation coefficient (𝐾 𝑑 ) (Zheng et al, 2018;Zhao et al, 2021). So, in this study the models presented were then analyzed based on the values of 𝐾 𝑟 , 𝐾 𝑡 and 𝐾 𝑑 .…”

Section: Introductionmentioning

confidence: 99%

Analysis of submerged breakwater models using ripple tank

Mutmainnah,

Wulandari,

Argus

et al. 2023

App.Sci.Def

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A breakwater is an infrastructure that functions to dampen wave energy. To secure the area directly adjacent to the coast, an effective breakwater model is needed based on the analysis of the dissipation coefficient value ( ). This study aims to determine a good breaker model based on the value using a ripple tank. The data analyzed were wave heights before and after passing through the breakwaters of the three concrete models whose arrangement was varied. The results showed that the breaker model that is effective in reducing wave energy is the Grooved cube model with holes arranged horizontally based on the resulting small reflection coefficient ( ) and transmission coefficient ( ) values and large values

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Experimental study on the wave dissipation performance and mooring force of porous floating breakwater

Cited by 8 publications

References 5 publications

Performance of Using Porous Floating Cylindrical Breakwater with Different Porosities as a Wave Energy Dissipater in Experimental Study

Performance of Using Porous Floating Cylindrical Breakwater with Different Porosities as a Wave Energy Dissipater in Experimental Study

Numerical Modeling of Hydrodynamic Performance on Porous Slope Type Floating Breakwater

Analysis of submerged breakwater models using ripple tank

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