双曲型方程的基于外心对偶剖分的有限体积元法
The Finite Volume Element Method for Hyperbolic Equation Based on Circumcenter Dual Subdivisions
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摘要: 讨论双曲型方程的基于外心对偶剖分的有限体积元法.设原始三角形剖分的任意三角形单元的重心Q和外心C的距离满足|QC|=O(h2),在此条件下,给出了双曲型方程半离散有限体积元格式最优的H1模和L2模误差估计以及两个全离散格式下的误差估计.Abstract: A finite volume element method for the hyperbolic equations based on circumcenter dual subdivision is discussed.Let the distances between the barycenter Q and circumcenter C of any triangle element satisfy |QC|=O(h2),and under this condition,the optimal H1 and L2 norms error estimates are obtained for the semi-discrete finite volume element scheme.Furthermore the error estimates are also obtained for the two fully-discrete schemes.