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arXiv 1708.05850math.NAcs.NA
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具有跳跃系数的Maxwell方程的HX预条件子的收敛性(Ⅰ):正则Helmholtz分解的各种推广

Convergence of HX Preconditioner for Maxwell's Equations with Jump Coefficients (i): Various Extensions of The Regular Helmholtz Decomposition

Qiya Hu

摘要:

本文是两篇系列文章的第一篇,其目的是证明HX预条件(由Hiptmair和Xu 2007提出)对具有跳跃系数的Maxwell方程的收敛性。本文对三维区域上的边有限元函数建立了正则Helmholtz分解的各种推广。正则Helmholtz分解所定义的函数在多面体域和某些非Lipchitz域的面和边上都能保持零切补,并且具有仅含$logarithm$因子的稳定性估计.这些正则亥姆霍兹分解将在另一篇论文中用于证明具有跳跃系数的麦克斯韦方程组的HX预条件子的收敛性(Hu 2017)。

英文摘要:

This paper is the first one of two serial articles, whose goal is to prove convergence of HX Preconditioner (proposed by Hiptmair and Xu 2007) for Maxwell's equations with jump coefficients. In this paper we establish various extensions of the regular Helmholtz decomposition for edge finite element functions defined in three dimensional domains. The functions defined by the regular Helmholtz decompositions can preserve the zero tangential complement on faces and edges of polyhedral domains and some non-Lipchitz domains, and possess stability estimates with only a $logarithm$ factor. These regular Helmholtz decompositions will be used to prove convergence of the HX preconditioner for Maxwell's equations with jump coefficients in another paper (Hu 2017).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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