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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 .
An analytical solution to the wave diffraction of a circular cylinder with an open top and an inner column in the outer wall was established by using a linear model proportional to the pressure difference between the two walls and the expansion of the eigenfunction. The effects of the ratio of the open area of the outer wall, the ratio of the radius of the cylinder to the inner column, the depth of the cylinder on the total wave force on the cylinder and the height of the wave around the cylinder were studied. The increase of the rate of wave height at the end of the cylinder and the total wave force on the cylinder structure is obviously reduced, and the increase of the void fraction G of the outer wall also has certain influence on the wave height and the attenuation of the wave force. Reduce the wave height around the cylinder and reduce the total wave force on the cylinder structure.