Transformation of significant wave height and set-up due to entrained air bubbles effect in breaking waves

Hossain, Md Nur; Araki, Susumu

Ocean Modelling, 2024, 190, 102403

Number of Access:225（2025-11-27 16:34 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/98162

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Title
Transformation of significant wave height and set-up due to entrained air bubbles effect in breaking waves
Creator
CreatorName
Hossain, Md Nur
NRID
1000080324804 1000080324804
researchmap permalink
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Scopus Author ID
7402411003 7402411003
CreatorName
Araki, Susumu
Subject
Air bubble
Dissipation model
Irregular wave
Significant wave height and set-up
Surf zone
Wave breaking
Description
Hossain M.N., Araki S. Transformation of significant wave height and set-up due to entrained air bubbles effect in breaking waves. Ocean Modelling 190, 102403 (2024); https://doi.org/10.1016/j.ocemod.2024.102403.
Abstract
The transformation of wave height is of paramount significance in coastal engineering and the design of coastal structures. Considering the influence of air bubbles, this study devised an optimal dissipation model for accurately calculating changes in significant wave height (Hm0) and wave set-up for irregular waves undergoing breaking. Existing regular wave breaking models, which consider the effects of air bubbles, were adapted for direct application to irregular waves by deriving novel formulations. The proposed models leverage the probability of the fraction of broken waves. Hm0 was computed using the energy balance equation, while the wave set-up was calculated based on the momentum balance equation. A wide range of test scenarios, incorporating diverse scales (small and large) and experimental field data, was considered for validation. One of the proposed models, namely model-I (M-I), particularly demonstrated superior performance, manifesting lower error indices (P20), root-mean-square relative error (RMSRE), and Brier skill score (BSS) values in computing both Hm0 and wave set-up. Therefore, utilising M-I is strongly recommended for the precise estimation of Hm0 and set-up transformation.
Publisher
Elsevier Ltd
Source Title
Ocean Modelling
Volume (Issue)
190
Page
102403
Date of Issued
2024-08-01
Language
English
Handle URL
https://hdl.handle.net/11094/98162
PISSN
14635003
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.ocemod.2024.102403
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
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Version of Record
Category
学術雑誌論文 Journal Article