An Evaluation of combined Flame Surface Density and Mixture Fraction Models for Nonisenthalpic Premixed Turbulent Flames

摘要

A computational study f a nonisenthalpic premixed turbulent jet flame is described. The flame burns a homogeneously premixed stoichiometric methane-air mixture injected into a coflow of air. The enthalpy (chemical + sensible) varies because of mixing between the jet fluid and the coflow. The performance of the Bray-Moss (BM) model and three flame surface density (FSD) models is evaluated by comparing the Predictions of mean velocity and temperature profiles with recent experimental data.