Effects of Ultra-Porous 3D Printed Reefs on Wave Kinematics

Frau, Lorenzo; Marzeddu, Andrea; Dini, E; Gràcia, Vicente; Gironella, X.; Erioli, Alessio; Zomparelli, Alessandro; Sánchez‐Arcilla, Agustín

doi:10.2112/si75-171.1

Cited by 5 publications

(6 citation statements)

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“…However, unlike Kr's case, for sloping structures, the higher the wave steepness is followed by the decrease in Kt, but for the upright structure, the greater the wave steepness, the Kt tends to increase. Lorenzo et al [11] also mention that the influence of the crest width (B) should be studied, as its effects on wave transmission are significant, according to previous studies by [16]- [18]. The effect of crest width (B) was also simulated in this study.…”

Section: Resultsmentioning

confidence: 81%

“…However, the crest width effect does not significantly affect Kr, as shown in Figure 7. Porosity also affects the magnitude of the transmitted wave, as Lorenzo et al [11] conducted. They found that Kt decrease when the wave steepness rises.…”

Section: Resultsmentioning

confidence: 98%

“…Fig. 8 Comparing transmission coefficient (Kt) and wave steepness (Hs/L) with both porous and non-porous units [11] The effect of porosity was also investigated in this study. The upright structure model, model 6, and model 9 are compared to see the effect of porosity, by increasing the porosity, the transmission wave that occurs increases as shown in Figure 9.…”

Section: Resultsmentioning

confidence: 99%

“…The amount of wave energy that is dissipated (destroyed or damped) is the amount of incoming wave energy (Hi) minus the wave energy that is transmitted (Ht) and reflected (Hr) [10]. Wave height reduction was influenced by the wave steepness, relative freeboard, relative depth, and porosity [11].…”

Section: Introductionmentioning

confidence: 99%

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Physical Model Simulation: Influences the Shape of Breakwater Structures on the Coefficient of Transmission and Reflection

Pujianiki¹,

Dayanti²

2021

Int. J. Adv. Sci. Eng. Inf. Technol.

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Breakwater is used to break the wave energy that travels towards the beach. Part of the wave energy will be destroyed, transmitted, or reflected. The shape of breakwater affects the ability to break the wave energy. There are no researchers who have compared the effect of the shape of the breakwater structure on wave energy transmitted and reflected. This study aims to simulate the transmission coefficient (Kt) and reflection coefficient (Kr) of the breakwater in various forms. Physical models with a 1:100 scale model is used. A flap-type wave generator in a wave flume is used to generate the wave. Waves regularly move in one direction passed the model. The results showed an effect of the shape of the breakwater structure on Kt and Kr. By increasing the wave steepness (Hi/L), Kt's value will increase in the upright structure and decrease in the sloping structure. At the same time, the value of Kr tends to decrease when the wave steepness increases. The value of Kt is relatively smaller in upright structures than in sloping structures. By adding porosity to the structure, the Kt value will increase, followed by Kr's reduction. By increasing the crest B's width, Kt appears to increase, but the crest width does not significantly affect Kr. Kt and Kr are significantly smaller if the breakwater structure is inclined towards the sea or inverted trapezium. This type of breakwater has never been encountered in the field before.

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Section: Resultsmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physical Model Simulation: Influences the Shape of Breakwater Structures on the Coefficient of Transmission and Reflection

Pujianiki¹,

Dayanti²

2021

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…The most suitable loading direction is perpendicular to the layers of the printed specimen. Large scale application of inkjet 3DP, such as Dini [10] printer (well-known as a D-shape), would be most applicable to printing concrete/mortar members [33]. This technology can be developed for use in composite materials and complicated shapes for structural elements.…”

Section: Figures (18) and (20)mentioning

confidence: 99%

Experimental and numerical analysis of 3D printed cement mortar specimens using inkjet 3DP

Shakor

Gowripalan

Rasouli

2021

Archiv.Civ.Mech.Eng

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Investigations involving the experimental and numerical analysis of inkjet (powder-based) 3DP are relatively limited for cement mortar materials. This study, by using cement mortar specimens, aimed to determine the optimum strength of 3D printed structural members in all three planes by identifying the compressive strength of cubes, the modulus of elasticity and Poisson's ratio. In addition, this study aimed to analyse and verify the numerical model for 3D printed cementitious mortar (CP) prisms and beams using an inkjet 3D printer by considering the mechanical behaviour of the printed prisms under compression. Robust and optimal mechanical properties of the 3D printed cementitious mortar obtained from laboratory testing were utilised in the simulation of structural components using ABAQUS software. As inputs for simulation, the strength properties of the printed objects in all three cartesian planes were obtained from test results. The obtained results showed that the printed cementitious materials have orthotropic properties and that the results of experiments were consistent with the analytical solutions and hypothesised model for the different geometric shapes. This finding is extremely valuable in determining the optimum features of 3D printed structures.

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Changes in the Behavioral Characteristics of the Gangmun and Anmok Beaches following the Construction of Artificial Reefs

Kim

Nam

et al. 2019

Journal of Coastal Research

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Effects of Ultra-Porous 3D Printed Reefs on Wave Kinematics

Cited by 5 publications

References 1 publication

Physical Model Simulation: Influences the Shape of Breakwater Structures on the Coefficient of Transmission and Reflection

Physical Model Simulation: Influences the Shape of Breakwater Structures on the Coefficient of Transmission and Reflection

Experimental and numerical analysis of 3D printed cement mortar specimens using inkjet 3DP

Changes in the Behavioral Characteristics of the Gangmun and Anmok Beaches following the Construction of Artificial Reefs

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