Maximum Norm Error Estimators for Three-Dimensional Elliptic Problems

Maximum Norm Error Estimators for Three-Dimensional Elliptic Problems
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三维椭圆问题的最大范数误差估计器

DOI:
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发表时间:
1999
影响因子:
2.9
通讯作者:
C. Padra
C. Padra
中科院分区:
数学2区
文献类型:
--
作者:
E. Dari;R. Durán;C. Padra

文献摘要

被引文献

相似文献

本文定义了三维椭圆问题有限元逼近的后验误差估计。我们证明了估计是等价的,对数因子的网格大小,最大限度的误差范数。所得结果对任意多面体区域和一般网格都是有效的。对于Crouzeix-Raviart方法,我们也得到了类似的结果.最后,我们提出了一些数值结果比较自适应程序的基础上控制的错误,在不同的规范。
In this paper we define an a posteriori error estimator for finite element approximations of 3-d elliptic problems. We prove that the estimator is equivalent, up to logarithmic factors of the meshsize, to the maximum norm of the error. The results are valid for an arbitrary polyhedral domain and rather general meshes. We also obtain analogous results for the nonconforming method of Crouzeix--Raviart. Finally, we present some numerical results comparing adaptive procedures based on controlling the error in different norms.