Journal
WATER WAVES
Volume 2, Issue 2, Pages 243-262Publisher
SPRINGERNATURE
DOI: 10.1007/s42286-019-00014-9
Keywords
Sea waves direct numerical simulation; Wave breaking regularization; Wave statistics; High Order Spectral Method
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Funding
- The support from the Russian Foundation for Basic Research (Grants nos. 17-05-00067 and 18-05-80019) is acknowledged by AK. AS is grateful for the support from the Fundamental Research Programme of RAS Nonlinear Dynamics. [17-05-00067, 18-05-80019]
- Russian Foundation for Basic Research
- Fundamental Research Programme of RAS Nonlinear Dynamics
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The issue of accounting of the wave breaking phenomenon in direct numerical simulations of oceanic waves is discussed. It is emphasized that this problem is crucial for the deterministic description of waves, and also for the dynamical calculation of extreme wave statistical characteristics, such as rogue wave height probability, asymmetry, etc. The conditions for accurate simulations of irregular steep waves within the High Order Spectral Method for the potential Euler equations are identified. Such non-dissipative simulations are considered as the reference when comparing with the simulations of occasionally breaking waves which use two kinds of wave breaking regularization. It is shown that the perturbations caused by the wave breaking attenuation may be noticeable within 20 min of the performed simulation of the wave evolution.
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