摘要
随机风、浪环境要素存在较强相干性,该相干性影响随机风-浪联合传播过程中脉动风速与波浪的同步性和强度,进而影响海上结构受随机风-浪联合作用的准确计算。为此,基于随机波浪和脉动风场CFD数值模拟方法,建立随机风-浪联合传播数值水槽,开展一系列脉动风和随机波浪联合传播的数值模拟计算,基于数值结果分析探究风速位置高度、波浪有效波高、波浪谱峰频率和基本风速等因素对风、浪之间相干效应的影响特性及影响规律。依据这些因素的影响特性,研究提出联合传播过程中随机风-浪相干值计算函数,并依据各类影响因素变化条件下的系列数值结果拟合确定相干函数表达式中的各项参数,建立描述随机风-浪联合传播相干性计算函数公式。
There is a strong coherence between random wind and wave environment elements,which not only affects the synchronization and intensities of fluctuating wind and random wave in combined wind-wave propagation process,and but also affects the accurate calculations of combined wind-wave action on offshore structures.Therefore,based on the CFD numerical simulation methods of random wave and fluctuating wind fields,a numerical flume for simulations of combined wind-wave propagation was established,then a series of numerical simulations of combined propagation of fluctuating wind and random wave were carried out.Based on the analysis of numerical results,the influences of wind speed position height,significant wave height,wave peak frequency and basic wind speed on the coherence between wind and wave were explored.According to the influence characteristics of these factors,a calculation function model of wind-wave coherence value of combined wind-wave propagation was proposed.Then,the parameters of the coherence function model were determined by a series of numerical fits according to the numerical results under various influencing factors.Based on this,a concrete calculation expression describing the coherence value of combined wind-wave propagation was established.
作者
韦承勋
张志豪
余松泽
王文静
李盛辉
WEI Cheng−xun;ZHANG Zhi−hao;YU Song−ze;WANG Wen−jing;LI Sheng−hui(School of Civil and Architectural Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China)
出处
《船舶力学》
北大核心
2025年第8期1211-1225,共15页
Journal of Ship Mechanics
基金
广西自然科学基金面上项目(2025GXNSFAA069333)。
关键词
脉动风
随机波浪
风-浪联合
数值水槽
风-浪相干性
相干函数
fluctuating wind
random wave
combined wind-wave
numerical water flume
wind-wave coherence
coherence function
