斜坡型潜导堤波浪力特性的数值研究

为研究各水位期不同波高作用条件下,斜坡型潜堤所受波浪力的特性,基于某潜导堤工程设计与物理模型资料,采用FLUENT软件建立二维波浪数值水槽,用物理模型试验数据验证模型的可靠性,对不同淹没水深和波高下斜坡型潜导堤所受波浪力进行数值计算,分析波浪力与相对波高、相对淹没水深之间的关系,结合其他形式潜堤波浪力的经验计算公式拟合得出该斜坡型潜导堤堤顶面最大波浪力计算公式。结果表明:波浪力大小受相对波高、相对淹没水深的影响较为显著,其影响机理与波浪场流体运动特征相关;相对于波高的变化,波浪力对淹没水深的变化更为敏感,且波浪力在不同的淹没水深区间和不同的作用位置均呈现出不同的变化规律。

Numerical study on wave force characteristics of slope type submerged embankment

In order to study the wave force characteristics of the slope type submerged embankment under different wave height and water depth conditions,based on the design and physical model data of a submerged embankment,we use FLUENT software to establish a two-dimensional wave numerical water tank,verify the reliability of physical model by the test data,calculate the wave forces of slope type submerged embankment under different submerged water depths and wave heights by a series of numerical simulations,analyze the relationship of wave force,relative wave height and relative submerged water depth,and obtain the formula for calculating the maximum wave force on the top surface of the slope type submerged embankment by fitting the numerical data combining with other forms of submerged embankments.The results show that the wave force is significantly affected by the relative wave height and relative submerged water depth,and its influence mechanism is related to the wave field fluid motion characteristics.Compared with the wave height change,the wave force is more sensitive to the change of the submerged water depth,and the wave force show different change law in different submerged water depth intervals and different action positions.