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On the Use of CAD-Native Predicates and Geometry in Surface MeshingSeveral paradigms for accessing computer-aided design (CAD) geometry during surface meshing for computational fluid dynamics are discussed. File translation, inconsistent geometry engines, and nonnative point construction are all identified as sources of nonrobustness. The paper argues in favor of accessing CAD parts and assemblies in their native format, without translation, and for the use of CAD-native predicates and constructors in surface mesh generation. The discussion also emphasizes the importance of examining the computational requirements for exact evaluation of triangulation predicates during surface meshing.
Document ID
20040200741
Acquisition Source
Ames Research Center
Document Type
Technical Memorandum (TM)
Authors
Aftosmis, M. J. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 7, 2013
Publication Date
August 1, 1999
Subject Category
Computer Programming And Software
Report/Patent Number
NAS 1.15:1999-208782
A-99V0022
NASA/TM-1999-208782
Funding Number(s)
PROJECT: RTOP 522-31-12
CONTRACT_GRANT: NAG3-2019
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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