Experimental study on hydrodynamic performance of arc plate breakwater

Wang, Guoyu; Ren, Bing; Wang, Yongxue

doi:10.1016/j.oceaneng.2015.11.016

Cited by 39 publications

(3 citation statements)

References 19 publications

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“…* Corresponding author coastal tourism, establishing urban neighbor hoods and stability, as well as providing new job opportunities with high returns for young people and constructing fi shing ports that increase fi sh abundance [1,2]. Natural phenomena such as waves, winds, tides, and currents near the shore, on the other hand, have an…”

Section: Ključne Riječi Dizajn Konveksnih I Konkavnih Valobrana Zone ...mentioning

confidence: 99%

Experimental and Numerical Study on the Hydrodynamic Performance of Suspended Curved Breakwaters

Hussein¹,

Ibrahim²

2022

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The purpose of breakwaters is to protect the ports, beaches, or beach facilities from strong waves and storms, as they help establish calm inside the port and thus achieve safety for ships and ease of operation. This paper presents an experimental and numerical study of unconventional alternatives to the vertical breakwater in order to evaluate the hydrodynamic performance of the proposed models. Two proposed cases for a semi-submerged breakwater were selected in the form of a half-pipe section with an inside diameter of 20 cm and a thickness of 1 cm. Case (a) was of the concave type of semicircular breakwater, while case (b) was of the convex type. Numerical modeling FLOW 3D was used to construct numerous scenarios for numerical simulation of the proposed breakwaters. The obtained results indicates that, when comparing the wave transmission coefficient (Kt) and its reflection coefficient (Kr) with the relative water depth (h/L), the transmission coefficient decreased with the relative height of the wave, while the reflection coefficient was completely reversed. In case (a), Kt was less than in case (b) at a range of 10% to 15%, while Kr in case (a) was bigger than in case (b) at a range of 5% to 10%. When the wave hit the breakwater, it was reflected back as its energy is dissipated in less water depth and its speed decreases as it approaches the port. The velocity of the wave decreases as it approaches the bottom, which means that the wave is affected by the depth of the water, i.e. the lower the water depth, the lower the wave velocity. Case (a) was more efficient and effective in wave dissipation, current velocity, and bed stability than case (b), so it is recommended to use case (a) due to its efficiency in protecting coastal areas and generating electricity.

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Section: Ključne Riječi Dizajn Konveksnih I Konkavnih Valobrana Zone ...mentioning

confidence: 99%

Experimental and Numerical Study on the Hydrodynamic Performance of Suspended Curved Breakwaters

Hussein¹,

Ibrahim²

2022

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“…The SHP device consists of a single flat plate submerged at fixed depth below free surface water. The presence of the horizontal plate near the water surface tends to steepen the waves over the plate due to shoaling and part of the incident wave energy is dissipated by wave breaking, turbulence and friction on the plate [23,24]. The SHP type WEC utilizes the alternating flow below the plate, which arises due to the dissipation of the incident wave energy through the structure, acting as a propulsion for a hydraulic turbine [25,26].…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation on the efficiency of the submerged horizontal plate type wave energy converter

Seibt¹,

Felipe²,

Elizaldo³

et al. 2019

FME Transactions

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The high availability of energy within ocean waves is seen as an important and abundant alternative as a renewable energy source. This paper presents a numerical study of the submerged horizontal plate type wave energy converter, assessing its theoretical efficiency for several relative plate heights. The propagation and incidence of distinct wave periods through the device structure were simulated, and the device efficiency was evaluated disregarding the presence of the turbine under the plate. A total of six wave periods between 1.25 and 3.50 s with wave height of 0.06 m were considered for six different plate heights. The results allow to make theoretical recommendations on the converter performance. The multiphase Volume of Fluid model was used through a two-dimensional approach for air-water interaction and the conservation equations of mass, momentum and volume fraction transport were solved by the Finite Volume Method. The results of analysis allowed to observe that the highest relative plate height leads to enhanced submerged horizontal plate efficiencies among the simulated wave periods, as well as to identification of a theoretical device efficiency up to three times higher for larger wave periods than for shorter wave periods.

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“…Therefore, the study of the coastal defense measures is an extremely important subject research. The breakwater in the traditional sense has inherent defect, such as high price, technological complexity, difficult operational conditions, etc [2][3][4]. With the enhancement of environmental awareness among people, the application of semi-submersible breakwater in engineering is being increasingly extensive.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Wave Dissipation Coefficient for Semi-Submersible Permeable Tetrahedron

Dong

Shangguan

Wang

et al. 2017

AMM

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Semi-submersible permeable tetrahedron is a new wave consumption structure. The design concept of the model structure is that on the premise of ensuring the natural landscape are not destroyed. Structure completely infiltrate below sea level is called semi-submersible wave structure. In this paper, based on the physical model, the transmission coefficient of this wave consumption structure under regular wave were got, and the effect of the wave period, wave height, model height, rows’ number of layout and other factors on the attenuation characteristics of Semi-submersible permeable tetrahedron were investigated. The research results show that Semi-submersible permeable tetrahedron performs better wave dissipation on both long-period waves and short-period waves, which has wide prospect in application.

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Experimental study on hydrodynamic performance of arc plate breakwater

Cited by 39 publications

References 19 publications

Experimental and Numerical Study on the Hydrodynamic Performance of Suspended Curved Breakwaters

Experimental and Numerical Study on the Hydrodynamic Performance of Suspended Curved Breakwaters

Numerical evaluation on the efficiency of the submerged horizontal plate type wave energy converter

Experimental Study on Wave Dissipation Coefficient for Semi-Submersible Permeable Tetrahedron

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