A posteriori error estimates of finite element methods by preconditioning

A posteriori error estimates of finite element methods by preconditioning
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DOI:
10.1016/j.camwa.2020.08.001
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发表时间:
2020-02
期刊:
Comput. Math. Appl.
影响因子:
--
通讯作者:
Yuwen Li;L. Zikatanov
Yuwen Li;L. Zikatanov
中科院分区:
其他
文献类型:
--
作者:
Yuwen Li;L. Zikatanov

文献摘要

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我们提出了一个框架,涉及预处理与有限元方法中的后验误差估计。特别是,我们使用子空间校正方法的标准工具,以获得可靠和有效的误差估计。作为一个简单的例子,我们恢复了二阶椭圆型方程的经典残差估计。
We present a framework that relates preconditioning with a posteriori error estimates in finite element methods. In particular, we use standard tools in subspace correction methods to obtain reliable and efficient error estimators. As a simple example, we recover the classical residual error estimators for the second order elliptic equations.