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首页> 外文期刊>Journal of Coastal Research: An International Forum for the Littoral Sciences >Smoothed particle hydrodynamics modeling of combined wave and surge overtopping and hydraulic erosion of an articulated concrete block-strengthened levee system
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Smoothed particle hydrodynamics modeling of combined wave and surge overtopping and hydraulic erosion of an articulated concrete block-strengthened levee system

机译：铰接式混凝土砌块加筋堤岸系统波浪与浪涌超顶联合及水力侵蚀的光滑颗粒水动力学模型

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Rao, X.; Li, L.; Amini, F., and Tang, H., 2012. Smoothed particle hydrodynamics modeling of combined wave and surge overtopping and hydraulic erosion of an articulated concrete block-strengthened levee system. Combined wave and surge overtopping may cause damage on earthen levees. Levee strengthened on the levee crest and landward-side slope can provide protection against the erosion damage induced by the combined wave and surge overtopping. In this paper combined wave overtopping and storm surge overflow of a levee with a trapezoidal cross section strengthened by an articulated concrete block (ACB) system was studied in a purely Lagrangian and meshless approach, two-dimensional smoothed particle hydrodynamics (SPH) model. By comparing with the results of full-scale experiment data, the model was verified, and the erosion parameters were calibrated. Time series of overtopping discharge and flow thickness at six locations on the levee crest and landward-side slope were calculated. New equations were developed for average overtopping discharge, mean flow thickness, root mean square (RMS) wave height, mean velocity, and velocity of the wave front down the landward-side slope. The shear stresses on the levee crest and landward-side slope were calculated. The characteristics of soil loss were given. Equations were also provided to estimate soil loss. The range of the application of these equations was discussed.
机译：饶，X。李琳; Amini，F.和Tang，H.，2012年。铰接式混凝土砌块加筋堤坝系统的波浪与浪涌叠加和水力侵蚀相结合的平滑粒子流体动力学模型。浪潮和浪涌的共同作用可能会损坏土堤。堤坝顶和向岸侧边坡上加固的堤坝可以提供保护，以防止波浪和浪涌的组合顶面引起的侵蚀破坏。本文采用纯拉格朗日和无网格方法，采用二维平滑粒子流体动力学（SPH）模型，研究了由铰接式混凝土砌块（ACB）系统加固的梯形断面的堤坝的波浪过顶和风暴潮溢出。通过与全面实验数据的结果进行比较，验证了模型并校准了腐蚀参数。计算了堤顶和陆地侧坡上六个位置的顶溢流量和流量厚度的时间序列。开发了新的方程式，用于平均越过顶面流量，平均流量厚度，均方根（RMS）波高，平均速度和从前陆侧坡向下的波前速度。计算了堤顶和陆侧坡上的剪应力。给出了水土流失的特征。还提供了方程来估算土壤流失。讨论了这些方程的应用范围。

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