A new indirect anisotropic quadrilateral mesh generation scheme with enhanced local mesh smoothing procedures
An enhanced version of indirect advancing front technique is proposed for the construction of full quadrilateral anisotropic meshes on 3D surfaces. The final quadrilateral mesh is constructed from a background triangular mesh and the merging procedure is carried out in the parametric space. The p...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/103124 http://hdl.handle.net/10220/19234 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | An enhanced version of indirect advancing front technique is proposed for the
construction of full quadrilateral anisotropic meshes on 3D surfaces. The final
quadrilateral mesh is constructed from a background triangular mesh and the merging
procedure is carried out in the parametric space. The proposed method employed the
systemic merging technique for the formation of quadrilaterals and the metric
specifications for controlling the anisotropic characteristics of the elements. In order to
generate well graded anisotropic quadrilaterals, the selection criteria of base segment for
merging are carefully defined. Furthermore, in order to improve the shape quality of the
final mesh, a set of new local smoothing algorithms for anisotropic quadrilateral mesh
quality enhancement has been proposed and tested in this study. Numerical examples
obtained indicate that the proposed enhanced local smoothing schemes can effectively
improve the quality of the quadrilateral meshes produced and increase the robustness of
the mesh generation scheme. |
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