The interaction between waves and slotted vertical walls was experimentally studied in this research to examine the performance of the structure in terms of wave transmission, reflection, and energy dissipation. Single and twin slotted barriers of different slopes and porosities were tested under random wave conditions. A parametric analysis was performed to understand the effect of wall porosity and slope, the number of walls, and the incoming relative wave height and period on the structure performance. The main focus of the study was on wave transmission, which is the main parameter required for coastal engineering applications. The results show that reducing wall porosity from 30% to 10% decreases the wave transmission by a maximum of 35.38% and 38.86% for single and twin walls, respectively, increases the wave reflection up to 47.6%, and increases the energy dissipation by up to 23.7% on average for single walls. For twin-walls, the reduction in wall porosity decreases the wave transmission up to 26.3%, increases the wave reflection up to 40.5%, and the energy dissipation by 13.3%. The addition of a second wall is more efficient in reducing the transmission coefficient than the other wall parameters. The reflection and the energy dissipation coefficients are more affected by the wall porosity than the wall slope or the existence of a second wall. The results show that as the relative wave height increases from 0.1284 to 0.2593, the transmission coefficient decreases by 21.2%, the reflection coefficient decreases by 15.5%, and the energy dissipation coefficient increases by 18.4% on average. Both the transmission and the reflection coefficients increase as the relative wave length increases while the energy dissipation coefficient decreases. The variation in the three coefficients is more significant in deep water than in shallower water.

中文翻译：

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与单壁和双壁垂直和倾斜槽壁的波相互作用

在这项研究中，通过实验研究了波浪与开槽垂直壁之间的相互作用，以检查结构在波的透射，反射和能量耗散方面的性能。在随机波条件下测试了不同坡度和孔隙率的单缝隙和双缝隙屏障。进行了参数分析，以了解壁的孔隙率和斜率，壁的数量以及传入的相对波高和周期对结构性能的影响。研究的主要重点是波浪传输，这是沿海工程应用所需的主要参数。结果表明，将壁孔隙率从30％降低到10％会使单壁和双壁的波透射率分别最多降低35.38％和38.86％，使波反射率增加到47.6％，并使单壁的能耗平均提高多达23.7％。对于双壁，壁孔隙率的降低将波传输率降低到26.3％，将波反射率提高到40.5％，并将能量耗散提高13.3％。与其他壁参数相比，添加第二壁在降低传输系数方面更为有效。壁的孔隙度比壁的倾斜度或第二壁的存在对反射和能量耗散系数的影响更大。结果表明，随着相对波高从0.1284增加到0.2593，透射系数降低21.2％，反射系数降低15.5％，能量耗散系数平均提高18.4％。随着相对波长的增加，透射系数和反射系数都增加，而能量耗散系数减小。在深水中比在浅水中，这三个系数的变化更为显着。