On the improvements in nearshore wave height predictions using nested SWAN-SWASH modelling in the eastern coastal waters of India

Umesh, P. A.; Behera, Manasa Ranjan

doi:10.1016/j.oceaneng.2021.109550

Cited by 12 publications

(4 citation statements)

References 99 publications

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“…SWAN model predicts precisely nearshore wave processes such as refraction, non-linear wave interactions, depthinduced breaking, white capping, and shoaling. In this case, as we simulate with a stationary mode, the SWAN model is capable of solving the balance equation, which can help in reducing computing times (Umesh and Behera, 2021).…”

Section: Methodsmentioning

confidence: 99%

Impact of focused wave groups on pier structures: a case study of severe breaking waves at Pont del Petroli during storm Gloria

Altomare,

Gironella,

Marzeddu

et al. 2024

Front. Built Environ.

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In January 2020, the footbridge connecting the seaward platform of the Pont del Petroli pier to Badalona beach collapsed due to the severe sea storm named Gloria. Approximately 15 m of the footbridge fell into the sea as a result of prolonged wave action and strong impacts. To understand the complex interaction between waves and structures that led to the pier’s collapse during the storm, a composite modelling approach was developed. The loads on each pier element were initially evaluated using the meshless DualSPHysics code, which employs the Smoothed Particle Hydrodynamics (SPH) method. This evaluation was conducted under severe wave conditions analogous to those experienced during the storm. Numerical models informed the design of an experimental campaign carried out at the Maritime Engineering Laboratory of Universitat Politècnica de Catalunya—BarcelonaTech, using the CIEM large-scale wave flume facility in Barcelona, Spain. Post-storm bathymetric surveys revealed significant alterations in the seabed profile near the affected infrastructure, including sediment deposition and a reduction in water depth from 10 m to 8 m. Consequently, it was anticipated that wave transformation and breaking in the vicinity of the structure would be substantially affected. To explore this phenomenon, various extreme wave impacts were experimentally simulated using focused wave groups. The physical model findings unveiled the forces that the pier endured during the storm Gloria. The results indicate that wave phases influence individual waves, with waves that are biased and asymmetric experiencing higher peaks than those focused on the crest. This insight helps to explain the structural failure of the footbridge during the storm and underscores the importance of considering wave phase impacts in the design and assessment of coastal infrastructure. The combined numerical and experimental approach provides a comprehensive understanding of the forces at play, contributing valuable knowledge to the field of coastal engineering and infrastructure resilience.

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Section: Methodsmentioning

confidence: 99%

Impact of focused wave groups on pier structures: a case study of severe breaking waves at Pont del Petroli during storm Gloria

Altomare,

Gironella,

Marzeddu

et al. 2024

Front. Built Environ.

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“…SWASH model is also applied for further research on wave-runup and overtopping [16] and prediction of wave-runup on a coral-reef bed [17]. Further study on the improvement of wave height prediction in the near-shore is also carried out by Umesh, P and Behera, M (2021) [18].…”

Section: Introductionmentioning

confidence: 99%

Effect analysis of wooden fence width on wave transmission by SWASH model

Mai,

Dao,

Ngo

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Wooden fences, a permeable structure, have become a nature-based solution for supporting traditional structures to restore mangrove forests along the Mekong deltaic coasts. Even though prior studies have explored a number of hydraulic functions of these fences, an in-depth investigation into the influence of fence width on wave dissipation and damping is needed to consider. Therefore, this paper employs a numerical approach to thoroughly examine the impact of fence width on wave damping. The findings illustrate the substantial role of fence width in governing the dissipation of incoming waves. The correlation between the transmission coefficient and the fence width is established. This relationship also concludes that the larger the fence thicknesses, the lower the transmission coefficients. Notably, the study also identifies that the transmission coefficient experiences a slight decline beyond a certain width threshold.

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“…With the development of wave models, the abundance of assimilation data, and the improvements in grid technology, wave models have been used to solve many scientific problems [7][8][9][10][11][12]. In wave numerical simulations, many ocean phenomena exist, and it is difficult to obtain results through calculations directly with the accuracy of the grid (not less than 50 m), which is called the sub-grid scale or sub-mesoscale physical process [13][14][15]. Thus, it is necessary to explore the empirical formulas derived from different physical processes to replace the model and generate efficient data, and the large-scale variable parameterization method used to close the equation is called the parameterization scheme [16,17].…”

Section: Introductionmentioning

confidence: 99%

The Wave Period Parameterization of Ocean Waves and Its Application to Ocean Wave Simulations

Lv,

Zhang,

Shi

et al. 2023

Remote Sensing

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The wave period is a wave parameter that is significantly influenced by factors such as wind speed and bottom topography. Previous research on wave period parameterization has primarily focused on wind-dominated sea areas and may not be applicable to certain regions, such as the equatorial calm or coastal areas dominated by swell waves. To address this limitation, this paper utilizes the third-generation wave numerical model SWAN to perform wave numerical simulations for a portion of the Northwest Pacific Ocean. The simulation incorporates observational data from nearshore stations, buoys, and satellite altimeters for error analysis. To develop a new wave parameterization scheme (WS-23), we employ extensive NDBC buoy data and incorporate the exponential rate and wave age characteristics that were previously established by predecessors. Our scheme introduces a judgement mechanism to distinguish between wind waves, swell waves, and mixed waves. The resulting ocean wave factor enhances the mean wave period values calculated using the model and other parameterization schemes. The experimental results demonstrate that our new parameterization scheme effectively improves the abnormal peak of the fitting data. Comparing the output values of the mean wave period element output of the SWAN model with our new parameterization scheme, we observe a reduction in the mean values of Ea, Ec, and RMSE by 0.231, 1.94%, and 0.162, respectively, while increasing the average r by 0.05.

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On the improvements in nearshore wave height predictions using nested SWAN-SWASH modelling in the eastern coastal waters of India

Cited by 12 publications

References 99 publications

Impact of focused wave groups on pier structures: a case study of severe breaking waves at Pont del Petroli during storm Gloria

Impact of focused wave groups on pier structures: a case study of severe breaking waves at Pont del Petroli during storm Gloria

Effect analysis of wooden fence width on wave transmission by SWASH model

The Wave Period Parameterization of Ocean Waves and Its Application to Ocean Wave Simulations

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