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该文通过物理模型实验和数值模拟研究了孤立波与斜坡上非淹没刚性植被的相互作用。物理模型实验在波浪水槽中进行,运用CCD高速相机测量了斜坡上波浪的爬高,分析了入射波波高和植被密度对爬高的影响,结果表明爬高与入射波高的比值近似为常数,其值取决于植被的密度。采用Boussinesq方程成功地模拟了波浪在斜坡上的传播变形及爬高过程:植被的阻水作用通过添加拖曳力项来实现,底床摩擦阻力系数通过模拟孤立波在无植被影响斜坡上的爬高确定,根据实验数据校核数值模型得到不同入射波高下植被的拖曳力系数。研究发现孤立波作用下斜坡上植被的平均拖曳力系数与平底床恒定流的情况并无明显差异。
In this paper, the interaction between solitary waves and non-submerged rigid vegetation on slopes is studied by physical model experiments and numerical simulations. The experiment of physical model was carried out in a wave flume. The height of the wave on the slope was measured by CCD high-speed camera. The effects of incident wave height and vegetation density on the climb were analyzed. The results show that the ratio of climb height to incident wave height is approximately constant, The value depends on the density of the vegetation. Boussinesq equation was used to successfully simulate the wave propagation and climb process on the slope. The water blocking effect of vegetation was achieved by adding the drag force term. The coefficient of friction coefficient of the bed was obtained by simulating the climb of solitary wave on the slope without vegetation effect Determine, according to the experimental data to verify the numerical model of the different incident wave height vegetation drag coefficient. It is found that there is no significant difference between the average drag coefficient of vegetation on slopes and the constant bed flow under solitary wave.