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基于RANS方程、VOF方法以及修正的Goring造波方法建立了模拟活塞式推波板运动的二维数值波浪水槽,实现了双孤立波直墙爬高的数值模拟.利用动边界技术模拟造波机推波板的运动,有效地实现了不同波峰间距双孤立波的造波方法.在验证单孤立波直墙爬高的基础上,模拟了不同相对波高、相对波峰间距的等波高双孤立波的直墙爬高过程,给出了波面、速度场及波动能量的变化规律.数值模拟结果表明:对于等波高的双孤立波,当入射波波高较大及两个波峰间距相对较小时,跟随在后孤立波的爬高放大系数小于先导孤立波的爬高放大系数;双孤立波在直墙爬高过程中,波动场的势能时间过程线呈现三峰形态,其中居中的最大势能峰值出现在第二个孤立波与经直墙反射后反向传播的第一个孤立波完全对撞的时刻.
Based on the RANS equation, the VOF method and the modified Goring wave method, a two-dimensional numerical wave trough simulating the movement of the piston plate was established and the numerical simulation of double-lone wave straight wall climbing was realized. The wave-making method of push-wave plate is effectively implemented to achieve double solitary wave with different peak spacing. On the basis of verifying the climbing height of single solitary wave straight wall, the simulation of double wave solitary waves with different relative wave height and relative peak spacing The results show that when the wave height of the incident wave is relatively large and the spacing between the two wave peaks is relatively small, The amplifying coefficient of the isolated solitary wave is smaller than that of the leading solitary wave. During the process of vertical wall climbing, the double-solitary wave shows a three-peak shape in the time course of the potential energy. The peak of the maximum potential energy in the center appears in the second A time when a solitary wave completely collides with the first solitary wave that propagates backward through the wall.