【摘要】 运用基于FLUENT软件平台的二维数值波浪水槽,采用流体体积(VOF)方法处理波浪自由面,应用"解析松弛"方法实现了数值造波-消波。模拟规则波下不同返浪墙断面形式情况下的流场和水动力。应用直墙驻波理论解和物理模型试验结果验证了数值波浪水槽的可行性。比较波浪力的数值模拟与物理模型试验结果可以发现,水动力冲量的均方差小于水动力最大值的均方差,且水动力冲量的误差也小于水动力最大值,说明以冲量作为特征量能更好地描述水动力载荷的变化。在给定堤顶超高的条件下,不同堤脚超高和弧形返浪墙高度的组合对越浪量有明显影响:低弧趾超高和大半径弧面组合有利于降低越浪量,但水动力载荷也较大;高弧趾超高和小半径弧面组合越浪量较大。更多还原

【Abstract】 Based on the RANS equation and k-εmodel,a 2D numerical wave flume is developed within the frame of FLU- ENT through modifying the source terms of momentum equations by distributed sources associated with the incoming waves. The volume of fluid method(VOF)is used to trace the free surfaces.Numerical simulation of the interaction between regular waves and simple slope profile dikes was carried out.Being compared the numerical results with the theoretical solution and the measured data,it can be found that this numerical wave flume works well.For a given toe level,the overtopping discharge changes as the different combination of the toe level and the crown wall is adopted.更多还原