波浪与外壁开孔双筒柱群的相互作用

应用速度势的特征函数展开和透空壁内两壁间压力差和流体速度成正比的线性模型，建立 了波浪与外壁开孔同轴双筒桩柱群相互作用的线性解析解. 应用这一模型进行了数值计算， 用以检验孔隙系数对双筒柱上的波浪力和波面高度的影响. 结果表明，外壁孔隙系数的增加 对减小波浪力和柱外波面高度有很大影响.

Wave interaction with arrays of combined cylinders with an solid interior column and a porous exterior column

The interaction of water wave with arrays of combined cylinders with an solid interior column surrounded by a coaxial exterior column with perforated wall at a section in azimuthal direction is investigated theoretically. A semi-analytic linear solution has been acquired based on an eigenfunction expansion of velocity potential and a linear model between the pressure difference between two sides of a perforated wall and the fluid velocity inside it. Numerical experiments have been carried out to examine the influences on the wave force and wave run-up on the arrays of combined cylinders with perforated wall by the porous coefficient. The combined cylinder may reduce both the wave run-up and the wave loads on it through combination of certain parameters. It is found that the porous rate of the exterior wall have a significant influence on the wave run-up and wave loads. For certain parameter combinations, the porous combined cylinder may reduce the wave run-up or wave loads on it.