离岸流灾害水动力学过程的数值模拟研究

来源 :海洋学报（中文版） | 被引量 : 0次 | 上传用户：luo000

【摘要】

：

离岸流是近岸流的重要组成部分,当波浪受到特殊海滩地形的影响,会形成一股沿着离岸方向运动的高速水流,能够迅速将人带离海岸,对海滨安全造成威胁.为了深入探究离岸流的形成机理及水动力学特性,本文基于二阶Stokes波浪理论,采用了更为光滑的变截面沙坝模型,通过流体体积法捕捉自由液面,对离岸流进行三维数值模拟探究.本文重点分析了离岸流产生时流场的瞬时速度、时均速度、压强等不同参量的分布规律,结果显示在沙坝和海岸线之间,有一对方向相反的水循环体系;对比不同流层离岸流的速度,了解到波浪与离岸流的耦合作用;并探究了入射

【作者】

：

田海平陈雷王维辛立彪

【机构】

：

太原理工大学力学国家级实验教学示范中心,山西太原 030024;太原理工大学力学国家级实验教学示范中心,山西太原 030024;西北工业大学力学与土木建筑学院,陕西西安710129

【出处】

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海洋学报（中文版）

【发表日期】

：

2021年12期

【关键词】

：

离岸流数值模拟二阶Stokes波三维流场沙坝海滩

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离岸流灾害水动力学过程的数值模拟研究

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