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Experimental study of a porous floating breakwater

机译：多孔浮式防波堤的实验研究

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The paper presents a novel configuration of floating breakwater and its performance in waves. The structure is fabricated with large numbers of diamond-shaped blocks so arranged to reduce transmitted wave height and the mooring force. Two mooring modes, directional mooring and bidirectional mooring are considered in the tests. The influence of an impermeable vertical sidewall on transmission coefficient is estimated. The results examined under the present investigations are: K_t, wave transmission coefficient (K_t=H_t/H_i, H_t-transmitted wave height, H_i-incident wave height); K_r,rnreflection coefficient (K_r=H_r/H_i, H_r-reflected wave height); E_(loss) (E_(loss) = 1-K_r~2-K_t~2~(1/2)), the value of the dissipation of incident wave energy; and mooring force per unit length of the breakwater (F_w denotes windward mooring force and F_1 denotes leeward mooring force for directional mooring, and F_1, F_2, F_3 and F_4 are four mooring forces for bidirectional mooring) of two mooring modes without sidewall. For the case of floating breakwater with impermeable sidewall, measured transmission coefficient K_T (K_T=H_T/H, H_T-the measured wave height in front of the sidewall, H-the wave height without structure and sidewall) is offered. The experimental results show that the proposed floating breakwater can reduce incident wave height by dissipating wave energy more than reflecting it.
机译：本文提出了一种新颖的浮式防波堤结构及其在波浪中的性能。该结构由大量菱形块制成，因此可以减小传输波的高度和系泊力。测试中考虑了两种系泊模式：定向系泊和双向系泊。估计了不可渗透的垂直侧壁对透射系数的影响。在本研究中检查的结果是：K_t，波传输系数（K_t = H_t / H_i，H_t传输波高，H_i入射波高）； K_r，反射系数（K_r ＝ H_r / H_i，H_r反射波高）； E_（损失）（E_（损失）= 1-K_r〜2-K_t〜2〜（1/2）），入射波能量的耗散值；两种不带侧壁的系泊模式的防波堤的每单位长度的系泊力（F_w表示上风系泊力，F_1表示定向系泊的下风系泊力，F_1，F_2，F_3和F_4是双向系泊的四个系泊力）。对于具有不透水侧壁的浮动防波堤的情况，提供了测得的透射系数K_T（K_T = H_T / H，H_T-测得的侧壁前波高，H-不含结构和侧壁的波高）。实验结果表明，所提出的浮式防波堤能够通过耗散波能而不是反射波来降低入射波的高度。

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