Development of Wavy Interface model for wave generation by the projection-based particle methods
Development of Wavy Interface model for wave generation by the projection-based particle methods
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DOI：
10.1016/j.coastaleng.2021.103861
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发表时间：
2021-02
影响因子：
4.4
通讯作者：
N. Tsuruta;Abbas Khayyer;H. Gotoh;Kojiro Suzuki
中科院分区：
文献类型：
--
作者：
N. Tsuruta;Abbas Khayyer;H. Gotoh;Kojiro Suzuki
本文通过对目标波前的直接模拟，提出了一种新的粒子法波边界模型，即波浪界面模型（Wavy Interface model，简称WI）。在实际工程问题中，作为输入边界的设计波的信息仅限于波高和周期。为了适应这种情况，所提出的波浪界面模型被设计为通过产生/去除自由表面周围的粒子来保持所需的波前，从而省略了通常的调谐过程。通过对规则波、不规则波和孤立波进行基准测试，证明了波浪界面模型的良好再现性。从再现的自由面轮廓、速度场和能量场等方面进行了验证。此外，对过顶波的模拟结果表明，波浪界面模型具有良好的水位涵养性。波浪界面模型是一种适合于数值波浪水槽的波浪生成模型，其产生波浪的精度与传统波浪桨模型相当，并且大大减少了CPU时间。
The paper presents a novel wave boundary model, namely Wavy Interface model, abbreviated as WI, for the particle methods by directly modelling the target wave fronts. In practical engineering problems, the information of the design waves as an input boundary is limited to only the wave heights and periods. To accommodate the situations, the proposed Wavy Interface model is designed to omit a usual tuning process by keeping the desired wave front through generation/removal of the particles around the free surface. The good reproducibility of the Wavy Interface model is shown through benchmarks targeting regular, irregular and solitary waves. Verification is made in terms of reproduced free-surface profile, velocity and energy fields. In addition, simulations of overtopping waves show the good conservation of the water level by the Wavy Interface model. The Wavy Interface model is shown to be a proper wave generation model in a numerical wave flume to generate waves as precise as the conventional wave paddle model and with considerable reduction of CPU time.