The gravity wave interaction with horizontally staggered multiple thin wavy porous barriers is analyzed under the assumption of potential flow theory. The dual boundary element method (DBEM) is used to solve the boundary value problem. The accuracy and reliability of the DBEM solutions are ascertained by comparing with known results in the literature and with an independently developed multi-domain boundary element method (MBEM) code. The study is focused on the scattering coefficients and vertical forces on an array of wavy barriers. The numerical results demonstrate that wave transmission by a horizontally staggered porous barrier is much better compared to a single horizontal plate. It is recommended to use plate porosity of 0.05 to 0.20, if transmission coefficient of less than 0.50 is needed, especially for relative water depth k₀h > 2. With an increase in the number of ripples and ripple amplitude on the porous plates, it is possible to further reduce wave transmission by 5% to 10%. Also, an increase in the inclination of the plate from 0 to 10 degrees can reduce the wave transmission and increases the wave reflection to 5% to 10%. Further, a reduction of about 10% to 30% in the vertical force on the wavy plate is possible for k₀h ≥ 1 with an increase in the relative ripple amplitude, the number of ripples and increased plate rotation. This essentially will help in the reduction of pile penetration length into the sea bed soil. The results of the present study can be used for the optimal design of wavy plate as a wave barrier for offshore and coastal engineering applications.

在势流理论的假设下，分析了重力波与水平交错的多个薄波浪多孔屏障的相互作用。使用双边界元方法（DBEM）解决边界值问题。通过与文献中的已知结果以及独立开发的多域边界元素方法（MBEM）代码进行比较，可以确定DBEM解决方案的准确性和可靠性。该研究的重点是波浪屏障阵列上的散射系数和垂直力。数值结果表明，与单个水平板相比，水平交错多孔屏障的波传输要好得多。如果需要透射系数小于0.50，特别是相对水深时，建议使用0.05至0.20的板孔隙率k ₀ h >2。随着多孔板上波纹数量的增加和波纹幅度的增加，有可能将波的透射率进一步降低5％至10％。同样，将板的倾斜度从0度增加到10度可以减少波的透射并将波的反射增加到5％到10％。此外，在k ₀ h内，波浪板上的垂直力可能会降低约10％到30％≥1时，相对波纹幅度增加，波纹数量增加，板旋转增加。这本质上将有助于减少桩穿透到海床土壤中的长度。本研究的结果可用于波浪板的优化设计，作为海上和沿海工程应用的防波堤。