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Numerical Simulation of Scour Depth and Scour Patterns in Front of Vertical-Wall Breakwaters Using OpenFOAM
Journal of Marine Science and Engineering ( IF 2.9 ) Pub Date : 2020-10-23 , DOI: 10.3390/jmse8110836
Nikolaos Karagiannis , Theophanis Karambas , Christopher Koutitas

An advanced coupled numerical model was developed and implemented in the present work, describing the scour patterns and predicting the scour depth in front of vertical-wall breakwaters. It consists of two independent models, a hydrodynamic Computational Fluid Dynamics (CFD) Reynolds Averaged Navier–Stokes (RANS) model developed on the OpenFOAM (version 2.4.0) toolbox (CFD), describing the wave propagation and the associated hydrodynamic field, and a morphodynamic one (sediment transport model), which was developed in FORTRAN by the authors and yields the updated seabed morphology. The method used here is iterative. The hydrodynamic model is applied for any given initial seabed geometry and wave conditions, resulting in the hydrodynamic field of the flow, which is used as input by the second sediment transport model for the seabed morphology evolution. This process is repeated until the equilibrium profile is achieved. Model results are compared satisfactorily with experimental data for both scour patterns and prediction of scour depth.

中文翻译:

使用OpenFOAM的垂直墙防波堤前水深和水深模式的数值模拟

在当前工作中开发并实施了高级耦合数值模型,用于描述冲刷模式并预测垂直壁防波堤前的冲刷深度。它由两个独立的模型组成,一个是在OpenFOAM(2.4.0版)工具箱(CFD)上开发的流体动力学计算流体动力学(CFD)雷诺平均纳维–斯托克斯(RANS)模型,用于描述波浪传播和相关的流体动力学场,以及作者在FORTRAN中开发了一种形态动力学模型(泥沙输送模型),并产生了更新的海底形态。这里使用的方法是迭代的。流体力学模型适用于任何给定的初始海床几何形状和波浪条件,从而产生水流的流体力学场,它被第二个沉积物运移模型用作海床形态演化的输入。重复该过程直到达到平衡曲线。模型结果与冲刷模式和冲刷深度预测的实验数据令人满意地进行了比较。
更新日期:2020-10-28
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