Abstract
A recent modification of the so-called Flame Speed Closure (FSC) model of turbulent combustion is tested against recently published experimental data on the speed and structure of statistically spherical flames that expand in a turbulent premixed gas after spark ignition. The measurements are simulated by solving the mass conservation equation, the κ - ε equations, the energy equation, and the balance equations for the Favre-averaged mass fractions of fuel and oxidant, which are closed by the FSC model. Results show the ability of the model (1) to predict the mean structure of developing turbulent flames very well and (2) to yield good approximations of turbulent flame speed for different mixtures at different pressures and rms turbulent velocities.
