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Computational Fluid Dynamics CFD is no longer the domain of just specialists. It is also being used by engineers and scientists in many disciplines who are interested in CFD as a tool to investigate other things and not as just an end in itself. The realization of this fact drives developers to produce user-friendly CFD products that automate most of the problem set up and solution process. The CFD++ software suite is a unified-grid, unified-solution, unified-computing CFD simulation capability that was designed from the outset to be effective from the user's perspective. The details are explained in this paper.

This paper details a computational fluid dynamics (CFD) analysis of the American Challenger car, a rocket-powered vehicle, under development by Bill Fredrick, which is intended to set a new world land speed record. Two different vehicle configurations were analyzed in order to evaluate lift, drag, and moment characteristics at various conditions. The geometries differed in the design of the rear strut and wheel housing; one having a diamond-shape profile, and the other a bi-convex, double-cusp shape. Steady-state simulations of the entire vehicle were performed at 4,000 ft elevation conditions, with and without active propulsion, and at varying vehicle Mach numbers: 0.6, 0.8, 0.95, and 1.05. The computations were performed on an unstructured mesh of approximately 8.2 million computational cells, which includes half of the vehicle with a symmetry plane (thus, sideslip is not taken into consideration).