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首页> 外文期刊>European Journal of Mechanics, B. Fluids >Numerical modelling of wind effects on breaking solitary waves
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Numerical modelling of wind effects on breaking solitary waves

机译：风对破碎孤立波的数值模拟

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Wind effects on breaking solitary waves are investigated in this study using a two-phase flow model. The model solves the Reynolds-averaged Navier-Stokes equations with the k - ∈ turbulence model simultaneously for the flows both in the air and water, with the air-water interface calculated by the volume of fluid method. First, the proposed model was validated with the computations of a breaking solitary wave run-up on a 1:19.85 sloping beach in the absence of wind, and fairly good agreement between the computational results and experimental measurements was obtained. Further, detailed information of the water surface profiles, velocity fields, vorticity, turbulent stress, maximum run-up, evolution of maximum wave height, energy dissipation, plunging jet and splash-up phenomena is presented and discussed for breaking solitary waves in the presence of wind. The inclusion of wind alters the air flow structure above water waves, increases the generation of vorticity and turbulent stress, and affects the solitary wave shoaling, breaking and run-up processes. Wind increases the water particle velocities and causes water waves to break earlier and seaward, which agrees with the previous experiment.
机译：在这项研究中，使用两相流模型研究了风对打破孤立波的影响。该模型用k-ε湍流模型同时求解空气和水中的雷诺数平均Navier-Stokes方程，并通过流体体积法计算出空气-水界面。首先，在无风的情况下，利用1：19.85倾斜海滩上的孤立孤波破坏计算，验证了所提出的模型，并且在计算结果和实验测量值之间取得了相当好的一致性。此外，详细介绍了水面轮廓，速度场，涡度，湍流应力，最大上升，最大波高的演变，能量耗散，喷射急降和飞溅现象的详细信息，并讨论了在存在时如何打破孤立波的问题。风。包含风改变了水波上方的气流结构，增加了涡度和湍流应力的产生，并影响了孤波的浅滩，破裂和上升过程。风增加了水粒子的速度，并导致水波更早和向海破裂，这与之前的实验一致。

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