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arXiv 2106.05048math.NAcs.NA
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时间离散Green-Naghdi方程的一类边界条件

A class of boundary conditions for time-discrete Green-Naghdi equations with bathymetry

Sebastian Noelle, Martin Parisot, Tabea Tscherpel

摘要:

这项工作致力于时间离散格林-Naghdi方程的结构,包括测深。我们使用的投影结构的方程来表征齐次和非齐次边界条件的半离散方程适定。这种结构使我们能够提出有效的和强大的数值处理的边界条件,确保熵稳定的计划的建设。数值证据表明,我们的方法是适合的情况下,现有的理论不包括的实际利益。

英文摘要:

This work is devoted to the structure of the time-discrete Green-Naghdi equations including bathymetry. We use the projection structure of the equations to characterize homogeneous and inhomogeneous boundary conditions for which the semi-discrete equations are well-posed. This structure allows us to propose efficient and robust numerical treatment of the boundary conditions that ensures entropy stability of the scheme by construction. Numerical evidence is provided to illustrate that our approach is suitable for situations of practical interest that are not covered by existing theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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