Well-Balanced Second-Order Convex Limiting Technique for Solving the Serre–Green–Naghdi Equations

Well-Balanced Second-Order Convex Limiting Technique for Solving the Serre–Green–Naghdi Equations
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求解 Serre–Green–Naghdi 方程的均衡二阶凸极限技术

DOI:
10.1007/s42286-022-00062-8
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发表时间:
2022
期刊:
Water Waves
影响因子:
--
通讯作者:
Tovar, Eric
Tovar, Eric
中科院分区:
--
文献类型:
--
作者:
Guermond, Jean-Luc;Kees, Chris;Popov, Bojan;Tovar, Eric

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本文介绍了一种用连续有限元逼近具有地形的色散Serre-Green-Naghdi方程的数值方法。该方法是Guermond等人介绍的双曲松弛技术的推广。(J Comput Phys450:110809,2022年)。它是显式的,在空间上是二阶精度的,在时间上是三阶精度的,并且是不变域保持的。它的平衡性也很好,而且没有参数。特别注意了当方程中加入物理源项时的凸极限法。该方法用理论基准进行了验证,并与实验室实验数据进行了比较。
In this paper, we introduce a numerical method for approximating the dispersive Serre–Green–Naghdi equations with topography using continuous finite elements. The method is an extension of the hyperbolic relaxation technique introduced in Guermond et al. (J Comput Phys 450:110809, 2022). It is explicit, second-order accurate in space, third-order accurate in time, and is invariant-domain preserving. It is also well balanced and parameter free. Special attention is given to the convex limiting technique when physical source terms are added in the equations. The method is verified with academic benchmarks and validated by comparison with laboratory experimental data.
DOI: 10.1137/17m1149961
发表时间: 2017-10
期刊: SIAM J. Sci. Comput.
影响因子: --
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