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基于RANS方程和VOF方法,采用RNG k-ε湍流模型,建立了可进行海堤断面越浪数值模拟的数值波浪水槽,首次给出了规则波作用下精确刻画栅栏板形状的海堤越浪过程数值模拟。采用现有的简单断面的斜坡堤越浪实验结果,对数值模型进行了验证,结果表明越浪量计算结果与实验数据基本一致。通过数值实验,给出了规则波作用下无栅栏板和带栅栏板情况下海堤越浪堤顶流垂线平均流速的时间过程线,计算结果得到实验验证。初步讨论了栅栏板作用下波浪爬高和越浪流的流场特征和栅栏板的消能机理。
Based on the RANS equation and the VOF method, a RNW k-ε turbulence model is used to establish a numerical wave tank which can simulate the wave over the seawall. The wave course of the seawall that accurately characterizes the fence plate under the regular wave is given for the first time Numerical Simulation. The existing simple cross-section of the ramp wave dike test results, the numerical model was verified, the results show that the calculated results of the over-wave and the experimental data are basically the same. By numerical experiments, the time course curves of average vertical velocities of surf breakwater dike under sea wave without fencing and fencing are given. The calculation results are verified by experiments. The characteristics of the flow field and the energy dissipation mechanism of the fence panels are discussed preliminarily.