Conference paper Open Access
Building Direction Fields on the Medial Object to Generate 3D Domain Decompositions for Hexahedral Meshing
Papadimitrakis, Dimitrios; Armstrong, Cecil G.; Robinson, Trevor T.; Le Moigne, Alan; Shahpar, Shahrokh
In this work, a novel method for creating decompositions of general 3D domains, suitable for hexahedral mesh generation is presented. To accomplish this, frames and cross-fields are generated on top of the medial object of the domain. The geometrical and topological information carried by the medial object, together with the directional information of the frames/crosses help analyze the domain. By generating frames and cross fields on medial vertices, edges and faces based on touching vectors, a directional field is constructed on top of the medial object. Based on it, critical lines in the domain called, singularity lines, are identified. Starting from these, a complete line network is created on the interior of the domain. This network is extruded to the boundary in order to create the boundary of high-quality partitioning surfaces that are used to decompose the domain into regions appropriate for a high-quality hexahedral mesh. Examples are given to validate the method.
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- Publication date:
- February 6, 2020
- DOI:
-
- Keyword(s):
- Hex mesh Medial Object Frame fields Cross fields Singularity Decomposition
- Meeting:
- 28th International Meshing Roundtable (IMR), Buffalo, New York, USA, October 14-17, 2019
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International