Flow Advanced Simulation Tool

A comprehensive rigorous unified physical formulation and accurate efficient robust computation technique are described for simulating complex compressible viscous reacting multiphases flow phenomena which can affect or control the performance or signatureof a flight vehicle during al phases of operation. The method is designed to enable continuous seamless predictions for internal, external, and unbounded subsonic and supersonic flow regions (nozzle, plume, body, wake) from ground to space includingturbulent, laminar, and noncontinuum regimes and transitiooons. The computations provide flow properties for evaluting engine propulsion/products, body aerodynamics/heating, plume/wake signature, etc. This unique fully-automated computation capabilitycombines the efficiency of special-purpose tools such as the BMDO standard plume codes with the utility of more general tools such as commercial computational fluid dynamics (CFD) codes. Advanced enabling technologies include a automatically the localflow features and boundary conditions (surface or free) and is ideally suited for treating coupled nonequilbrium reactions and transport phenomena. Benefits to BMDO include enhanced capability, fidelity, and speed for flow computation to support targetoptical signature analysis and simulation with application to detecting, tracking, typing, targeting, and intelligence. Potential commercial applications include advanced computational fluid dynamics and imaging methodlogies with broad utility forinvestigating flow-dependent physical phenomena and related optical effects.