Preprints
https://doi.org/10.5194/gmd-2022-187
https://doi.org/10.5194/gmd-2022-187
Submitted as: development and technical paper
16 Sep 2022
Submitted as: development and technical paper | 16 Sep 2022
Status: this preprint is currently under review for the journal GMD.

Enhanced Ocean Wave Modeling by Including Effect of Breaking under Both Deep- and Shallow-Water Conditions

Yue Xu1 and Xiping Yu2 Yue Xu and Xiping Yu
  • 1Department of Hydraulic Engineering, Tsinghua University, Beijing, China
  • 2Department of Ocean Science and Engineering, Sothern University of Science and Technology, Shenzhen, China

Abstract. Accurate description of the wind energy input into ocean waves is crucial to ocean wave modeling and a physics-based consideration on the effect of wave breaking is absolutely necessary to obtain such an accurate description. This study evaluates the performance of an improved formula recently proposed by Xu and Yu (2020), who took into account not only the effect of breaking but also the effect of air-flow separation on the leeside of steep wave crests in a reasonably consistent way. Numerical results are obtained through coupling an enhanced atmospheric wave boundary layer model with the ocean wave model WaveWatch III (v5.16). The coupled model has been extended to be valid in both deep and shallow waters. Duration-limited waves under controlled normal conditions and storm waves under practical hurricane conditions are studied in details to verify the improved model. Both the representative wave parameters and the parameters characterizing the wave spectrum are discussed. It is shown that the improved source-term package for the wind energy input and the wave energy dissipation leads to more accurate results under all conditions. It performs evidently better than other standard source-term options of ST2, ST4 and ST6 embedded in WaveWatch III. It is also demonstrated that the improvement is particularly important for waves at their early development stage and waves in shallow waters.

Yue Xu and Xiping Yu

Status: open (until 11 Nov 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Yue Xu and Xiping Yu

Yue Xu and Xiping Yu

Viewed

Total article views: 118 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
100 14 4 118 1 1
  • HTML: 100
  • PDF: 14
  • XML: 4
  • Total: 118
  • BibTeX: 1
  • EndNote: 1
Views and downloads (calculated since 16 Sep 2022)
Cumulative views and downloads (calculated since 16 Sep 2022)

Viewed (geographical distribution)

Total article views: 109 (including HTML, PDF, and XML) Thereof 109 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 28 Sep 2022
Download
Short summary
Accurate description of the wind energy input into ocean waves is crucial to ocean wave modeling and a physics-based consideration on the effect of wave breaking is absolutely necessary to obtain such an accurate description, particularly under extreme conditions. This study evaluates the performance of a recently improved formula, which took into account not only the effect of breaking but also the effect of air-flow separation on the leeside of steep wave crests in a reasonably consistent way.