2007 Volume 49 Issue 150 Pages 267-276
The united model, which is applicable to the premixed and diffusion flame using of author's premixed combustion model[2-4], was proposed. It has the following features, 1) The model includes the laminar flame speed and the gradient of the mixing fraction. When the gradient of the mixing fraction is close to zero, then the model is also close to the existing premixed combustion model. 2) By the laminar flame speed, the effects of the pressure in the combustor, unburned gas temperature, and the flame stretch on the combustion were considered to the model. 3) The model is applicable with all the turbulence model like k-ε model, LES and direct simulation, on the case of the wrinkled laminar flame. The effect of the turbulence is considered through the eddy viscosity of each turbulence model.
