基于小波分析的波浪破碎能量变化特征Energy Variation Characteristics of Wave Breaking Based on Wavelet Analysis
赫岩莉,毛鸿飞,林金波,田正林,吴光林
摘要(Abstract)：
【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。
关键词(KeyWords)： 波浪破碎;非线性演化;小波变换;能量变化;相位耦合
基金项目(Foundation): 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）
作者(Author): 赫岩莉,毛鸿飞,林金波,田正林,吴光林
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