Abstract
Linear tetrahedral finite elements whose dihedral angles are all nonobtuse guarantee the validity of the discrete maximum principle for a wide class of second order elliptic and parabolic problems. In this paper we present an algorithm which generates nonobtuse face-to-face tetrahedral partitions that refine locally towards a given Fichera-like corner of a particular polyhedral domain.
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The first author was supported by the Swedish Foundation for Strategic Research, the second author was supported by Grant No. 49051 of the Academy of Finland, the third author was supported by Grant No. A 1019201 of the Academy of Sciences of the Czech Republic and by Institutional Research Plan AV0Z 10190503.
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Beilina, L., Korotov, S. & Krizek, M. Nonobtuse Tetrahedral Partitions that Refine Locally Towards Fichera-Like Corners. Appl Math 50, 569–581 (2005). https://doi.org/10.1007/s10492-005-0038-7
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DOI: https://doi.org/10.1007/s10492-005-0038-7