Abstract
Swirling spray flames are widely encountered in gas-turbine combustors, rocket and ram-jet engines and internal combustion engines. Large-eddy simulation (LES) with different sub-grid scale (SGS) stress and combustion models is frequently used for studying the combustion mechanism of liquid fuel and design of combustors. In this paper, LES with a statistical-moment combustion model was used for studying a swirling spray flame. The statistical results for velocity, temperature and species concentration were validated by both experimental results and DNS database, showing the reliability of the simulation results. The instantaneous results give the spiral structures of flames formed by swirl, which can intensify combustion.
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