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On the accuracy of internal wave generation method in a non-hydrostatic wave model to generate and absorb dispersive and directional waves

(2021) OCEAN ENGINEERING. 219. p.1-14
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Abstract
The weakly reflective wave generation is a wave generation and absorption method in phase-resolving models, based on the assumption that the waves propagating towards the wave generation boundary are small amplitude shallow water waves with direction perpendicular to the boundary. This assumption makes the method weakly reflective for dispersive and directional waves. The internal wave generation method was proposed by Vasarmidis et al. (2019b) as an alternative, for the non-hydrostatic wave model, SWASH, to avoid reflections. In this study, a comparison is made between the performance of the new internal wave generation method and the weakly reflective wave generation method. It is shown that using the internal wave generation leads to a significantly more accurate prediction of the resulting wave field in case of waves reflected back to the numerical boundary. Additionally, the internal wave generation method is extended to short-crested waves and SWASH is validated for the first time with experimental data for the cases of wave propagation over a shoal and wave diffraction around a wall. The proposed extended internal wave generation method increases the capability of SWASH towards the study of wave propagation of highly dispersive short-crested waves in coastal environments with minimal reflection from the boundaries.
Keywords
Environmental Engineering, Ocean Engineering, Non-hydrostatic wave model, SWASH, Internal wave generation, Weakly reflective wave generation, Short-crested waves, FREE-SURFACE FLOW, IRREGULAR WAVES, BREAKING WAVES, BOUSSINESQ, WATER, PROPAGATION, ABSORPTION, EFFICIENT, DIFFRACTION, EQUATIONS

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MLA
Vasarmidis, Panagiotis, et al. “On the Accuracy of Internal Wave Generation Method in a Non-Hydrostatic Wave Model to Generate and Absorb Dispersive and Directional Waves.” OCEAN ENGINEERING, vol. 219, 2021, pp. 1–14, doi:10.1016/j.oceaneng.2020.108303.
APA
Vasarmidis, P., Stratigaki, V., Suzuki, T., Zijlema, M., & Troch, P. (2021). On the accuracy of internal wave generation method in a non-hydrostatic wave model to generate and absorb dispersive and directional waves. OCEAN ENGINEERING, 219, 1–14. https://doi.org/10.1016/j.oceaneng.2020.108303
Chicago author-date
Vasarmidis, Panagiotis, Vicky Stratigaki, Tomohiro Suzuki, Marcel Zijlema, and Peter Troch. 2021. “On the Accuracy of Internal Wave Generation Method in a Non-Hydrostatic Wave Model to Generate and Absorb Dispersive and Directional Waves.” OCEAN ENGINEERING 219: 1–14. https://doi.org/10.1016/j.oceaneng.2020.108303.
Chicago author-date (all authors)
Vasarmidis, Panagiotis, Vicky Stratigaki, Tomohiro Suzuki, Marcel Zijlema, and Peter Troch. 2021. “On the Accuracy of Internal Wave Generation Method in a Non-Hydrostatic Wave Model to Generate and Absorb Dispersive and Directional Waves.” OCEAN ENGINEERING 219: 1–14. doi:10.1016/j.oceaneng.2020.108303.
Vancouver
1.
Vasarmidis P, Stratigaki V, Suzuki T, Zijlema M, Troch P. On the accuracy of internal wave generation method in a non-hydrostatic wave model to generate and absorb dispersive and directional waves. OCEAN ENGINEERING. 2021;219:1–14.
IEEE
[1]
P. Vasarmidis, V. Stratigaki, T. Suzuki, M. Zijlema, and P. Troch, “On the accuracy of internal wave generation method in a non-hydrostatic wave model to generate and absorb dispersive and directional waves,” OCEAN ENGINEERING, vol. 219, pp. 1–14, 2021.
@article{8695316,
  abstract     = {{The weakly reflective wave generation is a wave generation and absorption method in phase-resolving models, based on the assumption that the waves propagating towards the wave generation boundary are small amplitude shallow water waves with direction perpendicular to the boundary. This assumption makes the method weakly reflective for dispersive and directional waves. The internal wave generation method was proposed by Vasarmidis et al. (2019b) as an alternative, for the non-hydrostatic wave model, SWASH, to avoid reflections. In this study, a comparison is made between the performance of the new internal wave generation method and the weakly reflective wave generation method. It is shown that using the internal wave generation leads to a significantly more accurate prediction of the resulting wave field in case of waves reflected back to the numerical boundary. Additionally, the internal wave generation method is extended to short-crested waves and SWASH is validated for the first time with experimental data for the cases of wave propagation over a shoal and wave diffraction around a wall. The proposed extended internal wave generation method increases the capability of SWASH towards the study of wave propagation of highly dispersive short-crested waves in coastal environments with minimal reflection from the boundaries.}},
  articleno    = {{108303}},
  author       = {{Vasarmidis, Panagiotis and Stratigaki, Vicky and Suzuki, Tomohiro and Zijlema, Marcel and Troch, Peter}},
  issn         = {{0029-8018}},
  journal      = {{OCEAN ENGINEERING}},
  keywords     = {{Environmental Engineering,Ocean Engineering,Non-hydrostatic wave model,SWASH,Internal wave generation,Weakly reflective wave generation,Short-crested waves,FREE-SURFACE FLOW,IRREGULAR WAVES,BREAKING WAVES,BOUSSINESQ,WATER,PROPAGATION,ABSORPTION,EFFICIENT,DIFFRACTION,EQUATIONS}},
  language     = {{eng}},
  pages        = {{108303:1--108303:14}},
  title        = {{On the accuracy of internal wave generation method in a non-hydrostatic wave model to generate and absorb dispersive and directional waves}},
  url          = {{http://dx.doi.org/10.1016/j.oceaneng.2020.108303}},
  volume       = {{219}},
  year         = {{2021}},
}

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