Abstract The effects of reef permeability on the spatial distributions of wave-induced current inside and outside the inhomogeneous coral reef body are investigated using an improved weakly compressible smoothed particle hydrodynamic (WCSPH) mixture model. The governing equations are formulated based on the two-phase mixture theory without considering the solid phase motion in terms of the intrinsic velocity and fluid density. The developed WCSPH mixture model is firstly validated by comparing the predicted results with the corresponding available data for Darcy seepage flow in a U-tube with permeable soil, wave damping over a permeable seabed and wave transformation over a permeable reef. The validated model is then applied to study the spatial distributions of wave-induced current inside and outside the permeable reef body with different porosity and porous layer thickness. Finally, a parametric study is carried out to investigate the effects of different porosity distribution types on wave-induced currents.

中文翻译：

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使用精制 SPH 模型对非均质珊瑚礁内的波浪感应电流进行数值分析

摘要 使用改进的弱可压缩平滑粒子流体动力学 (WCSPH) 混合模型研究了珊瑚礁渗透率对非均匀珊瑚礁体内外波浪感应电流空间分布的影响。控制方程是基于两相混合物理论制定的，没有考虑固有速度和流体密度方面的固相运动。开发的 WCSPH 混合模型首先通过将预测结果与具有可渗透土壤的 U 形管中的达西渗流、可渗透海床上的波浪阻尼和可渗透珊瑚礁上的波浪变换的相应可用数据进行比较来验证。然后应用验证后的模型研究不同孔隙度和多孔层厚度的可渗透礁体内外的波浪感应电流空间分布。最后，进行了参数研究以研究不同孔隙度分布类型对波浪感应电流的影响。