A non-local formulation for simulating the fully nonlinear Serre–Green–Naghdi equations for a solitary wave interaction with a variable slope

IF 4.3 2区 工程技术 Q1 ENGINEERING, OCEAN Applied Ocean Research Pub Date : 2024-10-14 DOI:10.1016/j.apor.2024.104220
T.S. Jang , H.G. Sung , Jinsoo Park
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Abstract

In this paper, we simulate a solitary wave interaction with a variable slope with reflection on a vertical wall by integrating the fully nonlinear Serre–Green–Naghdi (SGN) equations. To this end, we first provide an iterative solution process for the SGN equations so that we can simulate a solitary wave propagating over variable bathymetry. For the purpose of the study, we examine two physical problems. The first is of a solitary wave interaction with a constant slope with reflection on a vertical wall. The simulated solutions are in good agreement with other numerical and experimental data, confirming the validity of the current work. The second is concerned with a perturbation of the first problem, where the constant slope of the first problem is varied; i.e., a variable slope is taken into account. We compare the simulated solutions of the two problems and observe the (physically realistic) effect of the variable slope on shoaling and reflection by the vertical wall.
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模拟具有可变斜率的孤波相互作用的全非线性塞雷-格林-纳格迪方程的非局部公式
在本文中,我们通过对完全非线性的 Serre-Green-Naghdi (SGN) 方程进行积分,模拟了孤波与可变坡度的相互作用以及在垂直壁上的反射。为此,我们首先提供了 SGN 方程的迭代求解过程,从而可以模拟在可变水深上传播的孤波。为此,我们研究了两个物理问题。第一个问题是孤波与恒定斜坡相互作用,并在垂直墙壁上产生反射。模拟解与其他数值和实验数据十分吻合,证实了当前工作的有效性。第二个问题涉及第一个问题的扰动,即改变第一个问题的恒定坡度,也就是考虑可变坡度。我们对两个问题的模拟解进行了比较,并观察了可变坡度对垂直壁的滑动和反射的(物理现实)影响。
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来源期刊
Applied Ocean Research
Applied Ocean Research 地学-工程:大洋
CiteScore
8.70
自引率
7.00%
发文量
316
审稿时长
59 days
期刊介绍: The aim of Applied Ocean Research is to encourage the submission of papers that advance the state of knowledge in a range of topics relevant to ocean engineering.
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