Frequency-Explicit A Posteriori Error Estimates for Discontinuous Galerkin Discretizations of Maxwell’s Equations

IF 2.8 2区数学 Q1 MATHEMATICS, APPLIED

SIAM Journal on Numerical Analysis Pub Date : 2024-02-06 DOI:10.1137/22m1516348

Théophile Chaumont-Frelet, Patrick Vega

引用次数: 0

Abstract

SIAM Journal on Numerical Analysis, Volume 62, Issue 1, Page 400-421, February 2024.
Abstract. We propose a new residual-based a posteriori error estimator for discontinuous Galerkin discretizations of time-harmonic Maxwell’s equations in first-order form. We establish that the estimator is reliable and efficient, and the dependency of the reliability and efficiency constants on the frequency is analyzed and discussed. The proposed estimates generalize similar results previously obtained for the Helmholtz equation and conforming finite element discretizations of Maxwell’s equations. In addition, for the discontinuous Galerkin scheme considered here, we also show that the proposed estimator is asymptotically constant-free for smooth solutions.

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麦克斯韦方程非连续伽勒金离散化的频率显式后验误差估计值

SIAM 数值分析期刊》第 62 卷第 1 期第 400-421 页，2024 年 2 月。摘要。我们针对一阶形式的时谐麦克斯韦方程的非连续 Galerkin 离散化提出了一种新的基于残差的后验误差估计器。我们确定了该估计器的可靠性和效率，并分析和讨论了可靠性和效率常数与频率的关系。所提出的估算概括了之前针对亥姆霍兹方程和麦克斯韦方程的符合有限元离散化所获得的类似结果。此外，对于本文所考虑的非连续 Galerkin 方案，我们还证明了所提出的估计值对于光滑解是渐近无常数的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

SIAM Journal on Numerical Analysis 数学-应用数学

CiteScore

4.80

自引率

6.90%

发文量

110

审稿时长

4-8 weeks

期刊介绍： SIAM Journal on Numerical Analysis (SINUM) contains research articles on the development and analysis of numerical methods. Topics include the rigorous study of convergence of algorithms, their accuracy, their stability, and their computational complexity. Also included are results in mathematical analysis that contribute to algorithm analysis, and computational results that demonstrate algorithm behavior and applicability.