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Internal wave generation in a non-hydrostatic wave model

(2019) WATER. 11(5).
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Abstract
In this work, internal wave generation techniques are developed in an open source non-hydrostatic wave model (Simulating WAves till SHore, SWASH) for accurate generation of regular and irregular long-crested waves. Two different internal wave generation techniques are examined: a source term addition method where additional surface elevation is added to the calculated surface elevation in a specific location in the domain and a spatially distributed source function where a spatially distributed mass is added in the continuity equation. These internal wave generation techniques in combination with numerical wave absorbing sponge layers are proposed as an alternative to the weakly reflective wave generation boundary to avoid re-reflections in case of dispersive and directional waves. The implemented techniques are validated against analytical solutions and experimental data including water surface elevations, orbital velocities, frequency spectra and wave heights. The numerical results show a very good agreement with the analytical solution and the experimental data indicating that SWASH with the addition of the proposed internal wave generation technique can be used to study coastal areas and wave energy converter (WEC) farms even under highly dispersive and directional waves without any spurious reflection from the wave generator.
Keywords
non-hydrostatic model, SWASH, Internal wave generation, source term addition method, spatially distributed source function, :FREE-SURFACE FLOW, EQUATIONS, PROPAGATION, EFFICIENT, CODE

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Citation

Please use this url to cite or link to this publication:

MLA
Vasarmidis, Panagiotis, et al. “Internal Wave Generation in a Non-Hydrostatic Wave Model.” WATER, vol. 11, no. 5, 2019.
APA
Vasarmidis, P., Stratigaki, V., Suzuki, T., Zijlema, M., & Troch, P. (2019). Internal wave generation in a non-hydrostatic wave model. WATER, 11(5).
Chicago author-date
Vasarmidis, Panagiotis, Vicky Stratigaki, Tomohiro Suzuki, Marcel Zijlema, and Peter Troch. 2019. “Internal Wave Generation in a Non-Hydrostatic Wave Model.” WATER 11 (5).
Chicago author-date (all authors)
Vasarmidis, Panagiotis, Vicky Stratigaki, Tomohiro Suzuki, Marcel Zijlema, and Peter Troch. 2019. “Internal Wave Generation in a Non-Hydrostatic Wave Model.” WATER 11 (5).
Vancouver
1.
Vasarmidis P, Stratigaki V, Suzuki T, Zijlema M, Troch P. Internal wave generation in a non-hydrostatic wave model. WATER. 2019;11(5).
IEEE
[1]
P. Vasarmidis, V. Stratigaki, T. Suzuki, M. Zijlema, and P. Troch, “Internal wave generation in a non-hydrostatic wave model,” WATER, vol. 11, no. 5, 2019.
@article{8615432,
  abstract     = {In this work, internal wave generation techniques are developed in an open source non-hydrostatic wave model (Simulating WAves till SHore, SWASH) for accurate generation of regular and irregular long-crested waves. Two different internal wave generation techniques are examined: a source term addition method where additional surface elevation is added to the calculated surface elevation in a specific location in the domain and a spatially distributed source function where a spatially distributed mass is added in the continuity equation. These internal wave generation techniques in combination with numerical wave absorbing sponge layers are proposed as an alternative to the weakly reflective wave generation boundary to avoid re-reflections in case of dispersive and directional waves. The implemented techniques are validated against analytical solutions and experimental data including water surface elevations, orbital velocities, frequency spectra and wave heights. The numerical results show a very good agreement with the analytical solution and the experimental data indicating that SWASH with the addition of the proposed internal wave generation technique can be used to study coastal areas and wave energy converter (WEC) farms even under highly dispersive and directional waves without any spurious reflection from the wave generator.},
  articleno    = {986},
  author       = {Vasarmidis, Panagiotis and Stratigaki, Vicky and Suzuki, Tomohiro and Zijlema, Marcel and Troch, Peter},
  issn         = {2073-4441},
  journal      = {WATER},
  keywords     = {non-hydrostatic model,SWASH,Internal wave generation,source term addition method,spatially distributed source function,:FREE-SURFACE FLOW,EQUATIONS,PROPAGATION,EFFICIENT,CODE},
  language     = {eng},
  number       = {5},
  title        = {Internal wave generation in a non-hydrostatic wave model},
  url          = {http://dx.doi.org/10.3390/w11050986},
  volume       = {11},
  year         = {2019},
}

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