Variational integrator for the rotating shallow‐water equations on the sphere

Variational integrator for the rotating shallow‐water equations on the sphere
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球体上旋转浅水方程的变分积分器

DOI:
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发表时间:
2018
影响因子:
8.9
通讯作者:
S. MacLachlan
S. MacLachlan
中科院分区:
地球科学3区
文献类型:
--
作者:
Rudiger Brecht;W. Bauer;Alexander Bihlo;F. Gay‐Balmaz;S. MacLachlan

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我们发展了一个旋转球上浅水方程的变分积分器。变分积分器是建立在欧拉流体动力学的连续欧拉-庞加莱约化框架的离散化。本文描述了连续Euler-Poincaré方程在任意单形网格上的离散化。标准的数值试验进行了验证的精度和优良的保守性的离散变分积分。
We develop a variational integrator for the shallow‐water equations on a rotating sphere. The variational integrator is built around a discretization of the continuous Euler–Poincaré reduction framework for Eulerian hydrodynamics. We describe the discretization of the continuous Euler–Poincaré equations on arbitrary simplicial meshes. Standard numerical tests are carried out to verify the accuracy and excellent conservational properties of the discrete variational integrator.
DOI: 10.48550/arxiv.1409.8130
发表时间: 2014
期刊: --
影响因子: --
作者:
Thuburn J
通讯作者: Thuburn J