A non-hydrostatic model for wave evolution on a submerged trapezoidal breakwater

Magdalena, Ikha; Rif'atin, H. Q.; Kusuma, Muhammad Syahril Badri; Reeve, Dominic E.

doi:10.1016/j.rinam.2023.100374

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…[30] simulated wave interaction with porous structures by introducing an improved smoothed particle hydrodynamic (SPH) model based on RANS equations and a large eddy simulation (LES) model. The authors of [31] formulated a non-hydrostatic model based on a non-linear shallow water equation (NSWE) to investigate wave evolution on a water channel with a submerged trapezoidal breakwater.…”

Section: Introductionmentioning

confidence: 99%

Wave Transmission over Rubble-Mound Submerged Breakwaters

Repousis

Roupas

Memos

2023

JMSE

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This study focuses on the prediction of technical efficiency of narrow-crested submerged permeable rubble-mound breakwaters, in terms of wave attenuation. A number of existing formulae for estimating wave transmission coefficient for submerged breakwaters can be found in the literature, whereas in this work further improvement for that estimation has been achieved mainly through physical modelling. A series of 2D experiments under scale were conducted for regular and random waves providing data on wave transmission coefficient and respective wave breaking characteristics. A Boussinesq-type wave model capable of simulating wave propagation for regular waves over porous submerged breakwaters was also used in order to provide additional wave transmission information. Data analysis showed that wave breaking mechanism significantly affects wave energy dissipation and, therefore, wave breaking occurrence and type can be directly linked to wave transmission coefficient for a given structure’s geometry and sea state. The result of this work is the proposal of a set of simple semi-empirical equations for predicting wave transmission coefficient over small profile porous submerged breakwaters in relevance to the parameterization of the expected dominant wave breaking mechanism.

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Section: Introductionmentioning

confidence: 99%

Wave Transmission over Rubble-Mound Submerged Breakwaters

Repousis

Roupas

Memos

2023

JMSE

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Optimal design and placement of a combined trench and submerged breakwater system on the coastal area of Aceh

Magdalena,

Dhiya,

Natanael

et al. 2024

Results in Engineering

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Aceh's tsunami wave evolution and its interaction with hybrid protection structure

Magdalena,

Rif'atin,

Kongko

et al. 2024

Physics of Fluids

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The 2004 Aceh tsunami tragedy was one of the most catastrophic occurrences, resulting in damage and severe casualties in multiple countries. This study proposes a hybrid coastal protection system made up of mangroves, a sea dike, a trench, or a combination of the three structures to prevent similar devastation in the future. This system is expected to reduce the tsunami wave height, thus lowering their potential damage. The tsunami wave propagation is reproduced using a nonlinear shallow water equation model. To construct a numerical scheme, a staggered grid finite volume method is implemented. This scheme is then validated using several benchmark tests. Once validated, the computational results are compared to experimental data collected at the Laboratory of Coastal Dynamics in Yogyakarta, Indonesia. Both the physical and numerical models use the downscaled Aceh tsunami waves and real bathymetry. Several scenarios of structures combination are presented with the aim to determine the most effective combination. A sensitivity analysis is also conducted to support the results.

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A non-hydrostatic model for wave evolution on a submerged trapezoidal breakwater

Cited by 3 publications

References 26 publications

Wave Transmission over Rubble-Mound Submerged Breakwaters

Wave Transmission over Rubble-Mound Submerged Breakwaters

Optimal design and placement of a combined trench and submerged breakwater system on the coastal area of Aceh

Aceh's tsunami wave evolution and its interaction with hybrid protection structure

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