| Analytical Research on Wave Diffraction on Arc-Shaped Bottom-Mounted Perforated Breakwaters |
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| 作者姓名： | 程建生 缪国平 王景全 |
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| 作者单位： | [1]Engineering Institute of Engineering Corps, PIA University of Science ＆ Technology, Nanjing 210007, China [2]School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, China |
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| 摘 要： | An analytical method is developed to study wave diffraction on arc-shaped and bottom-mounted perforated breakwaters.The breakwater is assumed to be rigid,thin,vertical,immovable and located in water of constant depth.The fluid domain is divided into two regions by imaginary interface.The velocity potential in each region is expanded by eigenfunctions.By satisfying the continuity of pressure and normal velocity across the imaginary fluid interface,a set of linear algebraic equations can be obtained to determine the unknown coefficients of eigenfunctions.Numerical results,in the form of contour maps of the relative wave amplitude around the breakwater,are presented for a range of wave and breakwater parameters.Results show that the wave diffraction on the arc-shaped and bottom-mounted perforated breakwater is related to the incident wavelength and the porosity of the breakwater.The porosity of the perforated breakwater may have great effect on the diffracted field.
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| 关 键 词： | 多孔防浪堤 波衍射 波速 特征函数 |
| 修稿时间： | 2006-12-20 |
Analytical Research on Wave Diffraction on Arc-Shaped Bottom-Mounted Perforated Breakwaters |
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| CHENG Jian-sheng,MIAO Guo-ping,WANG Jing-quan.Analytical Research on Wave Diffraction on Arc-Shaped Bottom-Mounted Perforated Breakwaters[J].China Ocean Engineering,2007,21(3):417-428. |
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| Authors: | CHENG Jian-sheng MIAO Guo-ping WANG Jing-quan |
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| Abstract: | An analytical method is developed to study wave diffraction on arc-shaped and bottom-mounted perforated breakwaters.The breakwater is assumed to be rigid,thin,vertical,immovable and located in water of constant depth.The fluid domain is divided into two regions by imaginary interface.The velocity potential in each region is expanded by eigenfunctions.By satisfying the continuity of pressure and normal velocity across the imaginary fluid interface,a set of linear algebraic equations can be obtained to determine the unknown coefficients of eigenfunctions.Numerical results,in the form of contour maps of the relative wave amplitude around the breakwater,are presented for a range of wave and breakwater parameters.Results show that the wave diffraction on the arc-shaped and bottom-mounted perforated breakwater is related to the incident wavelength and the porosity of the breakwater.The porosity of the perforated breakwater may have great effect on the diffracted field. |
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| Keywords: | perforated breakwaters wave diffraction velocity potential eigenfunction porosity |
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