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A lattice Boltzmann model for the Korteweg-de Vries equation with two conservation laws

机译:具有两个守恒律的Korteweg-de Vries方程的格子Boltzmann模型

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摘要

A lattice Boltzmann model for the Korteweg-de Vries (KdV) equation is presented by using the higher-order moment method. In contrast to the previous lattice Boltzmann model to the KdV equation, our method has higher-order accuracy. Two key steps in the development of this model are the addition of a momentum conservation condition, and the construction of a correlation between the first conservation law and the second conservation law. The numerical example shows the higher-order moment method can be used to raise the truncation error of the lattice Boltzmann scheme.
机译:通过使用高阶矩方法,提出了Korteweg-de Vries(KdV)方程的格子Boltzmann模型。与以前的KdV方程的格子Boltzmann模型相比,我们的方法具有更高的精度。开发该模型的两个关键步骤是添加动量守恒条件,以及在第一守恒律和第二守恒律之间建立相关性。数值算例表明,高阶矩方法可用于提高晶格玻尔兹曼格式的截断误差。

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