Enabling Technologies For Complex CFD Applications
Bharat Kumar Soni, Gary Cheng, Roy P. Koomullil, Alan M. Shih, EDWARD A. LUKE, David Thompson · 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit · 2004
The progress realized in the development of geometry-mesh generation and numerical algorithms applicable to high fidelity computational fluid dynamics (CFD) problems is presented. The concentration is placed on the development of enabling technologies associated with the advancement in the state-of-the-art and state-of-the-practice in CFD. In particular, first, the development of the GGTK (Geometry-Grid Took Kit) as a unified approach to geometry-topology-mesh and unstructured/generalized mesh generation is described. Applications to automated and parametric mesh creation using templates and generalized grid refinement are presented to demonstrate success of these methodologies. Second, a software framework, Loci, for an intra-application coordination of fine-grained numerical kernels and methods to build interoperable, re-useable, and reconfigurable multidisciplinary computational systems is described with a candidate CFD system, CHEM. Third, the development of an integrated Direct Simulation Monte Carlo (DSMC) and Navier-Stokes CFD system is described demonstrating initial success in simulating rarefied gas and continuum flow regimes. Finally, a chimera grid approach has been described with a generalized grid based CFD system for addressing moving body CFD problems. Computational examples of practical interest are presented to demonstrate the success of these methodologies.