| V形防波堤与圆弧型防波堤之浅水波绕射作用的比较 |
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| 引用本文： | 才瀚涛,黄华,苏炜.V形防波堤与圆弧型防波堤之浅水波绕射作用的比较[J].海洋科学,2020,44(6):91-100. |
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| 作者姓名： | 才瀚涛 黄华 苏炜 |
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| 作者单位： | 中山大学航空航天学院应用力学与工程系,广东广州 510275;中山大学航空航天学院应用力学与工程系,广东广州 510275;中山大学航空航天学院应用力学与工程系,广东广州 510275 |
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| 基金项目： | 广东省级科技计划项目（2016A050502022） |
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| 摘 要： | 应用椭圆余弦波的绕射理论，推导了V形防波堤的浅水波浪绕射解析解，从而对现有的Airy微幅波理论进行了有效拓展。据此理论对V形防波堤的浅水波绕射作用进行了解析计算，并与几何形状相近的圆弧型防波堤结果加以了对比。结果表明：椭圆余弦波理论计算的V形防波堤最大波浪力和最大绕射波面明显大于微幅波理论的对应值。本方法适用于张角180°的有限长直立薄壁防波堤的浅水波绕射作用计算，从而将无限长直立薄壁堤的反射波理论加以有效拓展。张角同为120°的V形堤与圆弧堤的堤后防浪效果相近，而180°圆弧堤的堤后防浪效果优于张角90°的V形堤。
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| 关 键 词： | 椭圆余弦波 V形防波堤 圆弧防波堤 绕射 波浪力 |
| 收稿时间： | 2019/5/21 0:00:00 |
| 修稿时间： | 2019/12/27 0:00:00 |
Comparison of shallow water wave diffracted effects caused by a V-shaped breakwater and arc-shaped breakwater |
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| CAI Han-tao,HUANG Hu,SU Wei.Comparison of shallow water wave diffracted effects caused by a V-shaped breakwater and arc-shaped breakwater[J].Marine Sciences,2020,44(6):91-100. |
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| Authors: | CAI Han-tao HUANG Hu SU Wei |
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| Institution: | Department of Applied Mechanics and Engineering, College of Aeronautics and Astronautics, Sun Yat-sen University, Guangzhou 510275, China |
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| Abstract: | The theoretical solutions to shallow water wave diffraction by a V-shaped breakwater are derived with the use of cnoidal wave theory, the current Airy small-amplitude wave theory. Based on that, theoretically measure the impact on V-shaped breakwater that diffracted shallow water. The results show that, under the same shallow water conditions, the maximum dimensionless wave forces and wave surfaces on the V-shaped breakwater are larger than those predicted by the small-amplitude wave theory. The method given in the paper is suitable for calculating diffracted wave effects with the breakwater angle 180° on the finite length vertical thin-walled breakwater. The diffracted effects of a 120° V-shaped breakwater and a 120° arc-shaped breakwater are similar and a 180° arc-shaped breakwater diffracted effect is greater than that of a 90° V-shaped breakwater. |
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| Keywords: | cnoidal wave V-shaped breakwater arc-shaped breakwater diffraction wave force |
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