准确模拟波流相互作用下的流场结构是河口海岸动力学研究与工程实践的一个重要课题。改进了波流边界层控制方程中的波浪压强梯度垂向变化关系式,结合两方程紊流模型,建立了可以模拟边界层内外全水深流速剖面的数学模型。将计算结果与纯水流、纯波浪、波流同向和波流逆向实验数据进行对比,结果表明,模型可以较好地复演波流相互作用下边界层内外的时均流速分布特征。
Accurate simulation of wave‐current interaction is an important topic in scientific research and engineering practice for estuarine and coastal dynamics .The conventional wave‐current bottom boundary layer model was extended to the whole water depth by introducing a vertical variation expression for the wave‐related dynamic pressure gradient and incorporating a two‐equa‐tion turbulence model .The model‐data comparisons demonstrate that the model is able to reproduce the velocity profiles both in‐side and outside the bottom boundary layers for various hydrodynamic configurations ,including current only ,wave only ,wave following current and wave opposing current .