Overlay Grid Based Geometry Cleanup

Proceedings, 11th International Meshing Roundtable, Sandia National Laboratories, pp.313-324, September 15-18 2002

MESHING
RESEARCH
CORNER

11th International Meshing Roundtable
Ithaca, New York, USA
September 15-18, 2002

FLUENT INC,
500 Davis St., Suite 600, Evanston, Illinois 60201

Abstract
A newly developed system for defining watertight volume geometry on imported foreign CAD models is described. This system is based on an overlay grid mesher that is being developed in the GAMBIT preprocessing code. It is being explored as an alternative way of cleaning dirty geometries. This overlay meshing based geometry cleanup enables an automatic volume reconstruction from inconsistent B-Rep surface geometries. These inconsistencies include common edges defined twice, small gaps, holes and overlapping of faces. This new approach holds the promise of higher automation levels, speed and robustness when compared to more traditional interactive cleanup methodologies.

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