Automatic adaptive mesh generation using metric advancing front approach
A new mesh generation procedure is suggested for the generation of 2D adaptive finite element meshes with strong element gradation and stretching effects. Metric tensors are employed to define and control the element characteristics during the mesh generation process. By using the metric tensor s...
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| Main Author: | |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/103384 http://hdl.handle.net/10220/19343 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | A new mesh generation procedure is suggested for the generation of 2D adaptive finite
element meshes with strong element gradation and stretching effects. Metric tensors are
employed to define and control the element characteristics during the mesh generation
process. By using the metric tensor specification and a new, robust and refined advancing
front triangulation kernel, triangles with nearly unit edge length with respect to the
normalized space are generated. Highly graded and stretched elements can be generated
without much difficulty and the operation complexity of the mesh generation process is
exactly the same as the usual 2D advancing front mesh generator. A set of mesh quality
enhancement procedures has also been suggested for the further improvement of the quality
of the finite element meshes. A simple and effective mesh conversion scheme is used to
convert the output triangular mesh to a pure quadrilateral mesh while all the essential element
characteristics are preserved. Mesh generation examples show that high quality finite element
meshes with element characteristics compatible with the specified metric tensors are
generated within a reasonable time limit in a common small computing environment. |
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