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A numerical scheme for the Green-Naghdi model

机译:Green-Naghdi模型的数值方案

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摘要

In this paper a hybrid numerical method using a Godunov type scheme is proposed to solve the Green-Naghdi model describing dispersive "shallow water" waves. The corresponding equations are rewritten in terms of new variables adapted for numerical studies. In particular, the numerical scheme preserves the dynamics of solitary waves. Some numerical results are shown and compared to exact and/or experimental ones in different and significant configurations. A dam-break problem and an impact problem where a liquid cylinder is falling to a rigid wall are solved numerically. This last configuration is also compared with experiments leading to a good qualitative agreement.
机译:在本文中,提出了一种使用Godunov型格式的混合数值方法,以解决描述色散“浅水”波的Green-Naghdi模型。根据适用于数值研究的新变量重写了相应的方程式。特别地,数值方案保留了孤立波的动力学。显示了一些数值结果,并将其与不同和重要配置下的精确和/或实验结果进行了比较。从数值上解决了水坝掉落到刚性壁的溃坝问题和冲击问题。最后的配置也与导致良好定性协议的实验进行了比较。

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