Algorithmic Realization of the Solution to the Sign Conflict Problem for Hanging Nodes on Hp-Hexahedral Nédélec Elements

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Original languageEnglish
Article number23
Number of pages20
JournalACM Transactions on Mathematical Software
Volume51
Issue number4
Early online date10 Sept 2025
Publication statusPublished - 12 Dec 2025

Abstract

In this work, Nédélec elements on locally refined meshes with hanging nodes are considered. A crucial aspect is the orientation of the hanging edges and faces. For non-orientable meshes, no solution or implementation has been available to date. The problem statement and corresponding algorithms are described in great detail. As a model problem, the time-harmonic Maxwell’s equations are adopted because Nédélec elements constitute their natural discretization. The algorithms and implementation are demonstrated through two numerical examples on different uniformly and adaptively refined meshes. The implementation is performed within the finite element library deal.II.

Keywords

    Finite element method, hanging nodes, locally refined meshes, Nédélec elements, sign-conflict, time-harmonic Maxwell’s equations

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Algorithmic Realization of the Solution to the Sign Conflict Problem for Hanging Nodes on Hp-Hexahedral Nédélec Elements. / Kinnewig, Sebastian; Wick, Thomas; Beuchler, Sven.
In: ACM Transactions on Mathematical Software, Vol. 51, No. 4, 23, 12.12.2025.

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