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波浪破碎产生近岸流是近岸浅水区域一个重要的水动力现象。该文利用辐射应力的概念,并考虑辐射应力沿水深的变化、波浪破碎引起的水滚以及波流共同作用下的水底剪应力,建立了基于有限体积法的三维波生近岸流数值模型。运用建立的数值模型模拟了两个实验室实验,并同实验的实测结果进行了对比。结果表明,建立的数值模型能够较好地模拟波浪破碎产生的近岸流。
The nearshore flow produced by wave breaking is an important hydrodynamic phenomenon in the shallow coastal waters. Based on the concept of radiation stress and taking into account the variations of radiation stress along the depth of water, the underwater roll shear caused by wave crushing and the combined effect of wave flow, a three-dimensional wave-based nearshore flow numerical model based on finite volume method is established. The two numerical experiments were simulated with the numerical model established and compared with the experimental results. The results show that the numerical model established can simulate the nearshore flow produced by the wave breaking well.