浅水波与圆弧型贯底式防波堤的相互作用

发布时间：2018-02-06 07:53

本文关键词： 圆弧型贯底式防波堤椭圆余弦波特征函数展开法波浪绕射波浪载荷　出处：《水动力学研究与进展(A辑)》2017年03期 　论文类型：期刊论文

【摘要】：该文基于椭圆余弦波绕射理论,应用特征函数展开法,推导了浅水波对圆弧型贯底式多孔介质防波堤绕射的波势解,并据此解析计算了作用于防波堤的水平波浪载荷与浅水波波面分布。计算结果表明:浅水波入射角与非线性影响参数、海况条件以及防波堤几何条件等因素的相对变化对波浪作用均存在一定的影响,结构透空可以明显减弱防波堤所受波浪作用。与微幅波理论对比可知:在一定浅水条件下采用椭圆余弦波一阶分量模型所计算的最大无量纲波浪力、力矩和波面分布值均明显高于微幅波理论的对应估值,反映了水波非线性因素的影响效应。
[Abstract]:Based on the theory of elliptic cosine wave diffraction and the method of eigenfunction expansion, the wave potential solution of shallow water wave diffraction to circular arc perforated porous medium breakwater is derived in this paper. The horizontal wave load and wave surface distribution of shallow water acting on breakwater are calculated analytically. The results show that the incident angle of shallow water wave and nonlinear influence parameters are obtained. The relative changes of sea conditions and breakwater geometric conditions have a certain effect on the wave action. Compared with the theory of micro-amplitude wave, the maximum dimensionless wave force calculated by using the first order model of elliptic cosine wave under certain shallow water condition can be obviously weakened by structural permeability. The values of moment and wave surface distribution are obviously higher than the corresponding estimates of the theory of micro-amplitude wave, which reflects the effect of nonlinear factors of water wave.
【作者单位】：中山大学工学院应用力学与工程系;
【基金】：广东省协同创新与平台环境建设专项项目(2014B090904066) 广东省公益研究与能力建设专项项目(2016A010104006,2015A020216008)~~
【分类号】：U656.2

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