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arXiv 2411.00575math.NAcs.NA
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一种用于三维不可压缩半地转流体方程的半离散最优传输方案

A Semi-Discrete Optimal Transport Scheme for the 3D Incompressible Semi-Geostrophic Equations

Théo Lavier

AI总结:

本文提出了一种基于半离散最优传输的三维数值方案,用于求解不可压缩半地转方程,实现了高效且能量守恒的模拟,并首次展示了该方法在气旋基准问题中的应用。

摘要:

我们描述了一种无网格的三维数值方案,用于求解不可压缩半地转方程,该方案基于半离散最优传输技术。这些结果扩展了之前二维实现的应用。我们采用的最优传输方法以其结构保持和能量守恒特性著称,并实现了高水平的效率和数值能量守恒。我们使用该方案生成了一个重要的气旋基准问题的数值模拟。据我们所知,这是首次对半地转方程进行完整的三维模拟,证明了半离散最优传输作为一种新颖、稳健的数值工具,在气象和海洋学建模中具有重要价值。

英文摘要:

We describe a mesh-free three-dimensional numerical scheme for solving the incompressible semi-geostrophic equations based on semi-discrete optimal transport techniques. These results generalise previous two-dimensional implementations. The optimal transport methods we adopt are known for their structural preservation and energy conservation qualities and achieve an excellent level of efficiency and numerical energy-conservation. We use this scheme to generate numerical simulations of an important cyclone benchmark problem. To our knowledge, this is the first fully three-dimensional simulation of the semi-geostrophic equations, evidencing semi-discrete optimal transport as a novel, robust numerical tool for meteorological and oceanographic modelling.

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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