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为了模拟波浪与水流的联合作用,基于Reynolds平均的Navier-Stokes方法,构建了一个三维波流数值水槽。使用该模型对不同出流边界条件进行了对比分析。结果表明:引入合理的入流和出流边界条件,可以保证在计算稳定后,水槽平均水面基本保持不变。垂向时均流速分布的计算结果与实验数据吻合良好。这表明:该波流数值水槽具有较好的波流特性,可用于计算波浪与水流、以及与三维固定结构之间相互作用。
In order to simulate the combined effect of wave and water flow, a three-dimensional wave numerical flow tank was constructed based on Reynolds average Navier-Stokes method. The model was used to compare different outflow boundary conditions. The results show that the introduction of reasonable inflow and outflow boundary conditions can ensure that the average surface water level of the tank remains unchanged after the calculation is stable. The vertical flow velocity distribution calculation results agree well with the experimental data. This shows that this wave flow numerical reservoir has good wave-flow characteristics and can be used to calculate the wave and water flow, as well as the interaction with the three-dimensional fixed structure.