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Gridgen's Implementation of Partial Differential Equation baste Stuctured Grid Generation Methods

Steinbrenner, John P. and John Chawner

Proceedings, 8th International Meshing Roundtable, South Lake Tahoe, CA, U.S.A., pp.143-152, October 1999

INTERNATIONAL
MESHING
ROUNTABLE

Pointwise, Inc., Bedford, TX, USA
Email: gridgen@pointwise.com

Abstract
Elliptic and hyperbolic partial differential equation methods for generating both surface and volume structured grids have been implemented in the Gridgen software system. Their implementation provides the means by which very high quality quad and hex grids can be generated for computational fluid dynamics (CFD). The grids, in turn, provide the basis for highly accurate CFD sim- ulations of viscous flow fields. The development and implementation of these methods resulted in several unique attributes: the ability to create grids that are topologically independent of the underlying geometry model, the ability to use a hyperbolic method to generate a surface grid spanning multiple trimmed B- Spline surfaces, and special boundary condition treatments that allow multi- block abutting grids to be generated using the hyperbolic method.

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