13th International Meshing Roundtable
Willimasburg, Virginia, USA
September 19-22, 2004
Massachusetts Institute of Technology, Cambridge, MA, U.S.A.
Michael J. Aftosmis
NASA Ames Research Center, Moffett Field, CA, U.S.A.
This paper presents a simple technique for generating anisotropic surface triangulations using a generic unstructured
quadrilateral decomposition of CAD entities that map to a logical rectangle. Watertightness and geometric quality
measures are maintained and are consistent with those obtained using CAPRIís default tessellation algorithm. Output
surface triangulations using the new method meet user specified criteria for chord-height, neighbor triangle dihedral
angle, and maximum triangle side length. This discrete representation has hooks back to the owning geometry
and therefore can be used in conjunction with these entities to allow for easy enhancement or modification of the
tessellation suitable for grid generation or other downstream applications.
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