Flamelet Crossing Frequencies and Mean Reaction Rates in Premixed Turbulent Combustion

摘要: Abstract Abstraet–The one-point, one-time description contained in the Bray-Moss-Libby model of premixed turbulent combustion is first generalized to a two-point, two-time formulation which includes information on time and length scales scalar field within flames. This then specialized treated detail so as yield expressions for autocorrelation progress variable, scale field, mean crossing frequency flamelets and, finally, rate chemical reaction. Although latter expression closely resembles results developed earlier an intuitive basis, its derivation present study permits assessment various assumptions intermediate by comparison with experimental measurements. Such comparisons are currently possible shown lend support analysis enhance prospects future exploitation general formulation.