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Conforming to interface structured adaptive mesh refinement: 3D algorithm and implementation

delete2018-03-08
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A
Anand Nagarajan
S
Soheil Soghrati *
DOI:10.1007/s00466-018-1560-2delete
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Abstract

Abstract

En 中文
A new non-iterative mesh generation algorithm named conforming to interface structured adaptive mesh refinement (CISAMR) is introduced for creating 3D finite element models of problems with complex geometries. CISAMR transforms a structured mesh composed of tetrahedral elements into a conforming mesh with low element aspect ratios. The construction of the mesh begins with the structured adaptive mesh refinement of elements in the vicinity of material interfaces. An r-adaptivity algorithm is then employed to relocate selected nodes of nonconforming elements, followed by face-swapping a small fraction of them to eliminate tetrahedrons with high aspect ratios. The final conforming mesh is constructed by sub-tetrahedralizing remaining nonconforming elements, as well as tetrahedrons with hanging nodes. In addition to studying the convergence and analyzing element-wise errors in meshes generated using CISAMR, several example problems are presented to show the ability of this method for modeling 3D problems with intricate morphologies.
Keywords:
CISAMR
Mesh generation
Adaptive refinement
Face swap
Complex geometry
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Journal

Computational Mechanics cover
Computational Mechanics
IF:
3.8
Papers:
3.2K
Citations:
9.0K

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U
University System of Ohio
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15.4W
Papers: 13.0W
Citations: 200