圆弧型贯底式透空防波堤对孤立波的绕射

发布时间：2018-04-13 22:40

本文选题：圆弧型贯底式透空防波堤 + 孤立波　；参考：《中山大学学报(自然科学版)》2017年03期

【摘要】：基于孤立波模型和水波绕射理论,应用特征函数展开法,推导了圆弧型贯底式透空防波堤引起的对孤立波绕射的波势解,并据此解析计算了作用于防波堤的水平波浪载荷和孤立波最大波面分布。计算结果表明:结构表面透空可明显减小防波堤所受波浪载荷,并改变了孤立波的绕射最大波面分布;而孤立波入射角度与非线性影响参数、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。与浅水条件下微幅波理论的结果进行对比,可知:在一定浅水条件下采用孤立波模型计算所得的最大无量纲波浪力和最大波面分布值均明显高于微幅波理论的对应估值,反映了浅水波非线性因素的影响效应。
[Abstract]:Based on the solitary wave model and the water wave diffraction theory, the wave potential solution of the circular arc penetrating bottom breakwater is derived by using the eigenfunction expansion method.The horizontal wave load and the maximum wave surface distribution of solitary wave acting on the breakwater are calculated analytically.The calculated results show that the surface permeability of the structure can obviously reduce the wave load on the breakwater and change the maximum diffraction surface distribution of the solitary wave, and the incident angle of the solitary wave and the nonlinear influence parameters.The relative changes of sea conditions and breakwater geometric conditions have a certain effect on the wave action.Compared with the results of micro-wave theory in shallow water, it can be seen that the maximum dimensionless wave force and the maximum wave surface distribution obtained by using the solitary wave model in a certain shallow water condition are obviously higher than the corresponding estimates of the micro-amplitude wave theory.It reflects the effect of nonlinear factors on shallow water waves.
【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(2015A020216008)
【分类号】：U656.2

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