Abstract
The new turbulent combustion model, which is applicable to the premixed and diffusion flame was proposed. The model includes the laminar flame speed and the gradient of mixing fraction. Through the laminar flame speed, the effect of pressure in the combustor and the temperature of unburned gas were considered. To verify the model, two dimensional numerical simulation of the laminar counterflow diffusion flame was performed. The predicted distribution of the temperature was in good agreement with experimental data.