Oriented Framework For Overlapping Grid Applications

The Overture framework is an object-oriented environment for solving partial differential equations on overlapping grids. We describe some of the tools in Overture that can be used to generate grids and solve partial differential equations (PDEs). Overture contains a collection of C++ classes that can be used to write PDE solvers either at a high level or at a lower level for efficiency. There are also a number of tools providedwith Overture that can be used with no programming effort. These tools include capabilities to ̄ repair computer-aided-design (CAD) geometries and build global surface triangulations, ̄ generate surface and volume grids with hyperbolic grid generation, ̄ generate composite overlapping grids, ̄ generate hybrid (unstructured) grids, ̄ solve particular PDEs uch as the incompressible and compressible Navier-Stokes equations.