Abstract This paper presents an arrangement of sub-surface fixed horizontal plates as an alternative to single long plates and conventional breakwaters. Through experimental tests in a wave flume, their capability as coastal protection elements was evaluated varying the number of plates and their spacing, as well as the roughness of their crowns by means of three different flexible covers. Due to the spatial arrangements, a Bragg reflection was achieved but it did not improve the plate performance. The results suggest that the plates work best when their spacing is far from this resonance condition. In general, the minimum spacing is recommended for maximizing wave energy dissipation. Wave transmission had lower values when increasing the number of plates. Energy redistribution was observed from low to high frequencies of the spectra due to non-linear interactions. Wave skewness was calculated but remained low in the sheltered area. Moreover, the flexible cover was useful for filtering the waves in the frequency range between 1.5 and 3.5 times the peak frequency of the spectrum, with a more complex role in the dissipation of energy of longer waves.

中文翻译：

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海面波在覆盖有柔性介质的地下固定水平板防波堤的空间排列上传播

摘要 本文提出了一种地下固定水平板的布置，作为单长板和传统防波堤的替代方案。通过在波浪水槽中进行的实验测试，评估了它们作为海岸保护元件的能力，改变了板的数量和间距，以及通过三种不同的柔性覆盖物的冠部粗糙度。由于空间布置，实现了布拉格反射，但并没有改善板的性能。结果表明，当它们的间距远离这种共振条件时，板的工作效果最好。通常，建议最小间距以最大化波浪能量耗散。当增加板的数量时，波传输具有较低的值。由于非线性相互作用，从光谱的低频到高频观察到能量重新分布。计算出波偏度，但在遮蔽区域中仍然很低。此外，柔性盖可用于过滤频谱峰值频率 1.5 到 3.5 倍之间的频率范围内的波，在较长波的能量耗散方面具有更复杂的作用。