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该文基于波浪水槽物理模型试验,研究了不同波浪条件下,最大水平流速的垂线流速分布特性。与无植物时的垂线流速对比,提出了水平流速衰减系数,分析了其特性。与无植物区相比,各断面在柔性植物的影响下垂线流速均有所减小;在柔性植物带内,上部冠层区的流速减小,植物带越长减小越显著;近底处的流速沿程先减小后增大再减小。随着来波波高的增大,各断面与无植物时的流速差缓慢增大,流速减小区域有下移的趋势。植物带中和植物带后的实测值与衰减理论值的流速衰减系数均沿水深向上变化规律基本一致,沿程变大,实测值的垂线分布趋于均匀且近底处的流速衰减系数增大更加明显。
Based on the physical model test of wave flume, the vertical velocity distribution characteristics of the maximum horizontal velocity under different wave conditions are studied. In comparison with the vertical flow rate when there is no plant, the horizontal flow rate attenuation coefficient is proposed and its characteristics are analyzed. Compared with the non-vegetation area, the flow velocities of the vertical sections of the soft-shelled animals in all the sections decreased. In the flexible plant zone, the flow rate in the upper canopy area decreased and the longer the vegetation zone decreased, The flow rate decreases along the way and then increases and then decreases. With the increase of wave height, the flow velocity difference slowly increases with each section and without vegetation, and the flow velocity decreases with the downward trend. Both the measured value and the attenuation coefficient of the theoretical value after the plant zone and the plant zone are basically the same along the water depth and upward along the route, the vertical distribution of the measured value tends to be uniform and the attenuation coefficient of the flow rate near the bottom increases Big more obvious.