文献类型：期刊文献

中文题名：基于小波分析的波浪破碎能量变化特征

英文题名：Energy Variation Characteristics of Wave Breaking Based on Wavelet Analysis

作者：赫岩莉[1];毛鸿飞[1];林金波[1];田正林[1];吴光林[1]

机构：[1]广东海洋大学海洋工程学院,广东湛江524088

年份：2022

卷号：42

期号：4

起止页码：146

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD、、北大核心、北大核心2020

基金：国家自然科学基金委员会青年项目(52001071);广东省科技专项资金(“大专项+任务清单”)竞争性分配项目(2021A05227);广东省教育厅青年创新人才项目(2019KQNCX045);2021年度湛江市海洋青年人才创新项目(210830144542883);湛江市非资助科技攻关专题(210723164922102)。

语种：中文

中文关键词：波浪破碎;非线性演化;小波变换;能量变化;相位耦合

外文关键词：wave breaking;nonlinear evolution;wavelet transform;energy variation;phase coupling

中文摘要：【目的】研究深水破碎波演化过程中波浪成分非线性相位耦合作用及破碎能耗的来源。【方法】采用傅里叶变换、小波变换和小波二阶相干谱方法实验研究波浪演化过程中能量变化情况,分析波浪成分间非线性耦合作用与能量变化的相关性,通过探讨破碎前后能量变化及波浪成分相互作用过程,阐明波浪破碎能量变化特征。【结果】通过分析波浪聚焦过程中能量变化情况,显示波浪成分间非线性相互作用使得高频能量增加,波浪发生破碎后,能耗主要来源于部分高频区间。【结论】随着深水波浪聚焦,越来越多波浪成分参与到非线性相位耦合作用中,能量向高频成分转移;当波浪破碎后,波浪间非线性耦合作用减小,1.6~2.5 Hz波浪成分承担主要破碎能耗。

外文摘要：【Objective】 To explore the nonlinear phase coupling effect of wave components and the source of energy dissipation due to wave breaking during the evolution of deep-water breaking wave.【Method】 Fourier transform, wavelet transform and wavelet-based bicoherence are used to study experimentally the energy variation in the process of wave evolution, and to analyze the correlation between the nonlinear phase coupling effect of wave components and energy variation. The energy variation and interaction between wave components before and after wave breaking are discussed to clarify the energy variation characteristics of wave breaking.【Result】By analyzing the energy variation during wave focusing process, it can be seen that the nonlinear interaction between wave components increases high-frequency energy, and after wave breaking, the energy loss is mainly from part of the highfrequency section.【Conclusion】With the deep-water wave focusing, more and more wave components are involved in the nonlinear phase coupling, and the energy is transferred to the high-frequency components. When wave breaking occurs, the nonlinear coupling effect between waves decreases, and the wave components of 1.6-2.5 Hz undertake the main energy dissipation due to wave breaking.