波浪对上部开孔带内柱的圆筒结构的绕射

滕斌; 赵明; 李玉成

波浪对上部开孔带内柱的圆筒结构的绕射

大连理工大学海岸和近海工程国家重点实验室, 辽宁, 大连, 116024

基金项目: 国家自然科学基金资助项目(19732004;50025924);国家自然科学基金;香港研究资助局联合资助基金资助项目(49910161985)

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出版历程
- 收稿日期: 2000-09-07
- 修回日期: 2001-06-18

Wave diffraction from a cylinder with porous upper wall and an inner column

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

摘要

摘要: 应用透空壁内流体速度与两壁间压力差成正比的线性模型和特征函数展开方法,建立了外壁上部开孔并带有内柱的圆筒结构对波浪绕射的解析解.通过数值计算研究了外壁开孔率的大小、圆筒与内柱半径之比、筒内水深等因素对圆筒上总的波浪作用力和圆筒周围波浪高度的影响.经数值研究发现随着外壁开孔率的增大圆筒迎浪端的波浪高度和圆筒结构上总的波浪力明显减小,外壁孔隙特性G虚部的增加对波高和波浪力的衰减也有一定的影响;增加圆筒内部的水深可减小圆筒周围的波浪高度,降低圆筒结构上的总波浪力.
- 开孔结构 /
- 圆筒结构 /
- 波浪绕射 /
- 波浪力
Abstract: Based on a linear model between the pressure difference of two sides of a porous wall and the fluid velocity inside it,an analysis solution has been established by the eigenfunct ion expansion method for wave diffraction from a cylinder with upper porous outer wall and an inner solid cloumn.Numerical experiment has been carried out to exam ine the effects on the wave force on the cylinder and wave height around the cylinder by porous coefficients of the outer wall,the ratio of radii of inner to outer column,and the water depth inside the cylinder.The numerical results show that the increase on the porous coefficient of outer column and the water depth inside the cylinder will reduce the wave elevation around the cylinder and the wave load on it.
- porous structure /
- cylinder /
- wave diffractio /

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参考文献(13)

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