NUMERICAL AND EXPERIMENTAL DESCRIPTION OF THE FLOW, BOUNDARY LAYER AND BED EVOLUTION IN BORE-DRIVEN SWASH ON A COARSE SEDIMENT BEACH
NUMERICAL AND EXPERIMENTAL DESCRIPTION OF THE FLOW, BOUNDARY LAYER AND BED EVOLUTION IN BORE-DRIVEN SWASH ON A COARSE SEDIMENT BEACH
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DOI：
10.9753/icce.v33.currents.33
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
R. Briganti;N. Dodd;D. Pokrajac;T. O'Donoghue
中科院分区：
文献类型：
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作者：
R. Briganti;N. Dodd;D. Pokrajac;T. O'Donoghue
本文给出了冲刷带水动力和地貌动力学全耦合数值模式的比较结果。该模型同时求解非线性浅水方程和艾克斯纳方程进行河床修正。该模型采用SIMPLE GRASS公式进行泥沙输移，采用动量积分法进行底部剪应力预报。实验室测试是在阿伯丁大学的冲浪设施中进行的，目的是研究单个由钻孔产生的冲浪事件的水动力学和泥沙输送。从水深和水平流速(水深平均值和剖面)以及泥沙输运两个方面进行了比较。该模型在预测这些数量方面表现良好，尤其是在启动期间。
The paper presents the results of a comparison between a fully coupled numerical model for the hydro- and morphodynamics of the swash zone. The model solves simultaneously the Non-Linear Shallow Water Equations and the Exner equation for the bed updates. The model uses the simple Grass formula for the sediment transport and the momentum integral method for the bottom shear stress prediction. The laboratory tests were carried out at the University of Aberdeen swash facility and aimed at studying the hydrodynamics and sediment transport of a single, bore-generated swash event. The comparison is carried out in terms of water depth and horizontal velocity (depth average and profiles) and sediment transport. The model performs well in predicting these quantities, above all during the run-up.