中文摘要：

以RANS方程为控制方程,基于有限体积法,在动量方程中添加源项,建立了具有造波‐消波功能的数值波浪水槽。利用建立的源项造波数值波浪水槽,模拟了高桩挡板透空式防波堤在规则波作用下的消浪效果,完整地再现了堤前堤后的流态,分析了挡板相对入水深度对透浪系数的影响。在与试验值及拉帕公式对比后发现,数模计算结果与试验值较接近,拉帕公式偏大。研究了堤顶相对宽度、相对水深、相对波高对透浪系数的影响并提出修正公式,修正公式与计算值和试验值吻合较好。

英文摘要：

Based on the RANS equation and the finite volume method,a numerical wave tank is established by adding the source term into the momentum equation,which can generate and absorb waves. The dissipation of regular waves near a high pile baffle permeable breakwater is studied numerically. The situation is repeated perfectly. The effects of relative immersed depth of barrier on transmitted coefficient is analyzed in detail. The numerical results are close to the experimental values,both of which are smaller than the values predicted by Lapa formula. Furthermore,the effects of relative width of horizontal plate,relative water depth and relative wave height on transmitted coefficient are studied. A modified formula is given and the values agree well with the calculated values and experimental values.