An Unconditionally Stable Quadratic Finite Volume Scheme over Triangular Meshes for Elliptic Equations

An Unconditionally Stable Quadratic Finite Volume Scheme over Triangular Meshes for Elliptic Equations
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椭圆方程三角网格上无条件稳定二次有限体积方案

DOI:
10.1007/s10915-016-0244-3
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发表时间:
2017
影响因子:
2.5
通讯作者:
Qingsong Zou
Qingsong Zou
中科院分区:
数学2区
文献类型:
--
作者:
Qingsong Zou

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In this note, we present and analyze a special quadratic finite volume scheme over triangular meshes for elliptic equations. The scheme is designed with the second degree Gauss points on the edges and the barycenters of the triangle elements. With a novel from-the-trial-to-test-space mapping, the inf–sup condition of the scheme is shown to hold independently of the minimal angle of the underlying mesh. As a direct consequence, thenorm error of the finite volume solution is shown to converge with the optimal order.
椭圆边值问题的四边形网格上任意阶的顶点中心有限体积方案
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