CALCULATIONS OF SWIRL COMBUSTORS USING JOINT VELOCITY SCALAR PROBABILITY DENSITY-FUNCTION METHOD

Calculations are reported for recirculating swirling reacting flows us ing a joint velocity-scalar probability density function (PDF) method. The PDF method offers significant advantages over conventional finite volume, Reynolds-average based methods, especially for the computatio n of turbulent reacting flows. The PDF calculations reported here are based on a newly developed solution algorithm for elliptic flows, and on newly developed models for turbulent frequency and velocity that ar e simpler than those used in previously reported PDF calculations. Cal culations are performed for two different gas-turbine-like swirl combu stor flows for which detailed measurements are available. The computed results are in good agreement with experimental data.