Project Title:

High-Resolution Solutions to Stiff, Chemically Reacting Flow Fields

92-1-02.03-4471                                                   NAS02-13798
High-Resolution Solutions to Stiff, Chemically
     Reacting Flow Fields
Enig Association, Inc.
11120 New Hampshire Avenue, Suite 500
Silver Spring, MD  20705-2633
Jacob Krispin                                        (301-593-4471)

Abstract:

     This project will develop a state-of-the-art, second-order
accurate (hybrid, implicit-explicit, directionally unsplit,
Godunov-type), time-dependent scheme capable of solving high-
temperature, viscous, nonequilibrium, chemically reacting, and,
possibly, two-phase flow fields. The new scheme will be developed
to the point that realistic aerodynamic design and analysis
simulations, including the relevant aerothermodynamic flow fields,
can be calculated. Phase I will use a two-dimensional,
directionally unsplit, inviscid version of the scheme to solve for
stiff, chemically reacting model problems, implementing and
testing ideas recently published about high-order Godunov Schemes.

Potential Commercial Application:

Potential Commercial Applications:  The code will provide an
optimal tool for the analysis of material structures, aerodynamic
designs, propulsion and performance analysis of hypersonic
vehicles.

                                     ***