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arXiv 1401.0372math.NAcs.NA
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有限体积法中2k猜想是否成立?

Is $2k$-Conjecture valid for finite volume methods?

Beijing Computational Science Research Center(北京计算科学研究中心);Department of Mathematics, Wayne State University(韦恩州立大学数学系);College of Mathematics and Computational Science and Guangdong Province Key Laboratory of Computational Science, Sun Yat-sen University(中山大学数学与计算科学学院及广东省计算科学重点实验室)

Waixiang Cao, Zhimin Zhang, Qingsong Zou

AI总结:

本文研究了有限体积法的超收敛性质,证明了2k猜想,指出在网格顶点处,有限体积解在2k阶精度下逼近精确解,并通过数值实验验证了理论结果。

摘要:

本文研究了一类任意阶有限体积方法在矩形网格上的超收敛性质。主要结果是证明2k猜想:在底层矩形网格的每个顶点处,双k次有限体积解以O(h^{2k})的阶数逼近精确解。同时,还获得了有限体积离散误差在Lobatto和Gauss点处的超收敛性质。所有理论发现均通过数值实验得到验证。

英文摘要:

This paper is concerned with superconvergence properties of a class of finite volume methods of arbitrary order over rectangular meshes. Our main result is to prove {\it 2k-conjecture}: at each vertex of the underlying rectangular mesh, the bi-$k$ degree finite volume solution approximates the exact solution with an order $ O(h^{2k})$, where $h$ is the mesh size. As byproducts, superconvergence properties for finite volume discretization errors at Lobatto and Gauss points are also obtained. All theoretical findings are confirmed by numerical experiments.

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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