Dynamics of Swirling Premixed and Spray Flames

This paper focuses on the general Large-Eddy Simulations (LES) formulation to sim-ulate premixed and non-premixed combustion in complex flows such as those typically encountered in gas-turbine combustors. This formulation allows the study and analysis of the fundamental physics involved in such flows, i.e., vortex/flame interaction, combus-tion dynamics and stability, fuel-air mixing, droplet vaporization, and other aspects of combustion. A highly optimized, parallel LES solver capable of simulating a broad class of flows of practical interest in rather complex geometries has been developed. Typical flows studied include premixed flames in flamelet and broadened flamelet regimes and non-premixed flames in single and two phase flows. Current progress in model develop-ment and applications is presented.