Modeling of the Reaction Rate in Turbulent Premixed Flames

抄録

A model of the reaction rate in a turbulent premixed flame, based on the local three eddy scales of turbulence (TEST reaction model), is proposed to predict time-averaged profiles of the velocity, temperature and species concentration in combustion systems dominated by intense turbulence. The fundamental features of the model consist of a combustion reaction in the dissipating eddies of the Kolmogorov scale, clinging on the surfaces of Taylor's microscale eddies, and flames propagating within the microscale eddies. The mixing and flame spread in a large-scale flow field are dominated by the length scale derived from the k-ε turbulence model.