Transmission and reflection of waves on curtain wall breakwater

Subekti, Subekti; Shulhany, Ahmad

doi:10.36055/tjst.v17i1.11026

Cited by 2 publications

(2 citation statements)

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“…A main aspect of many studies is the investigation of the wave transmission through the CWB under different hydraulic and geometric conditions (Suh et al 2007;Subekti and Shulhany 2021;Alsaydalani et al 2017;Zhu et al 2015;Ji and Suh 2010). Various studies focused on the effects of breakwater porosity or the blocked share of the cross section e.g.…”

Section: Introductionmentioning

confidence: 99%

“…In terms of wave characteristics, the decrease in wave transmission with increasing wave numbers (kh) was observed (Isaacson et al 1998;Liu and Li 2011;Ajiwibowo 2018;Alsaydalani et al 2017). Besides, a better performance of CWB was seen in the context of steep waves (Subekti and Shulhany 2021;Subekti et al 2019;Ajiwibowo 2018;Elsheikh et al 2022). In addition, some research was also done regarding inclined curtain walls, Yagci et al (2014); Acanal et al (2013) investigated inclined curtain walls for shallow inclined plated 0° to 15°.…”

Section: Introductionmentioning

confidence: 99%

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Investigating Wave Transmission through Curtain Wall Breakwaters under Variable Conditions

Vu,

Zemann,

Oberle

et al. 2022

Journal of Coastal and Hydraulic Structures

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Coastal erosion has become a pressing problem all over the world, especially in areas where the hinterland is only slightly elevated over the sea level. The ongoing progression reveals the urging need for engineered coastal protection measures like breakwaters. Amongst others, curtain wall breakwater types (CWB) have proven their potential to dissipate the wave energy in multiple studies. Their application is often considered in situations where only a partial protection of the coast is needed (e.g. to maintain a hydraulic connectivity or enable sediment transport for land reclamation). Due to their slender design, they are assumed to offer an economical alternative in comparison to massive breakwater constructions, while their pillar-based foundation shows advantages for applications under soft soil conditions. Within the development process of a detached breakwater to face coastal erosion in the Mekong Delta, different types of CWB configurations have been investigated under regular wave conditions. Several characteristics of CWB structures such as the inclination and thickness of the wall, the height of the structures, the rate of submergence and emergence were examined for different water depths and wave parameters. The wave-structure interaction was analyzed using FLOW3D software, which is capable of simulating wave transformation. It showed a high agreement in comparison with own experimental investigations and the wave theory. The results showed a continuous reduction of the wave transmission coefficient with increasing inclination from 90° to 135°, whilst the orientation of the inclination (e.g. 60° vs 120°) only showed a minor effect regarding the wave reduction. All CWB arrangements showed increasing performance with decreasing wave periods. Besides, the wave transmission was mainly impacted by the level of submergence together with the amount of supporting piers and the thickness of the structures. Water depth changes due to tidal influence revealed an increase in wave transmission coefficient once the wave started to overtop the structure.

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Section: Introductionmentioning

confidence: 99%