ABSTRACT In this paper, wave transformation over a submerged reef has been numerically studied based on the OpenFOAM model. This numerical model solves the Reynolds-Averaged Navier-Stokes equations for two-phase flow and employs the volume of fluids (VOF) method for the free surface. The k-ω SST turbulence model is used to simulate wave breaking, and the wave generation library waves2Foam is adopted to generate waves in the model. The numerical model is first validated against the physical experimental data, and it is shown that the model is capable of simulating the key processes of wave shoaling, breaking and transmission over the submerged reef. Then, a series of numerical tests are conducted considering different incident wave heights, submergences and slopes of the reef. The influences of reef slope and submergence on the wave properties over the reef are discussed, which include the wave reflection and transmission coefficients, breaking wave height, wave-induced setup, and energy dissipation.

中文翻译：

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暗礁上波浪传播与变换的数值研究

摘要 在本文中，基于 OpenFOAM 模型对水下礁石上的波浪变换进行了数值研究。该数值模型求解两相流的雷诺平均纳维-斯托克斯方程，并对自由表面采用流体体积 (VOF) 方法。采用k-ω SST湍流模型模拟破浪，模型中采用波浪生成库waves2Foam生成波浪。该数值模型首先通过物理实验数据进行验证，表明该模型能够模拟潜礁上的波浪成礁、破碎和传播的关键过程。然后，考虑不同的入射波高、淹没和珊瑚礁坡度，进行了一系列数值试验。