6533b85afe1ef96bd12b8a47

RESEARCH PRODUCT

Acute Type Refinements of Tetrahedral Partitions of Polyhedral Domains

Michal KrizekSergey Korotov

subject

Numerical AnalysisApplied MathematicsDomain decomposition methodsAngle conditionFinite element methodCombinatoricsComputational MathematicsPolyhedronMaximum principleTetrahedronMathematics::Metric GeometryPartition (number theory)Circumscribed sphereMathematics

description

We present a new technique to perform refinements on acute type tetrahedral partitions of a polyhedral domain, provided that the center of the circumscribed sphere around each tetrahedron belongs to the tetrahedron. The resulting family of partitions is of acute type; thus, all the tetrahedra satisfy the maximum angle condition. Both these properties are highly desirable in finite element analysis.

https://doi.org/10.1137/s003614290037040x