Radiation-affected laminar flame propagation

Abstract

Increased laminar flame thickness and flame speed under the influence of radiation is shown in terms of an original heat transfer number where is the weighted nongreyness, [kappa]p and [kappa]R are the Planck mean and the Rosseland mean of the absorption coefficient, [tau] = [kappa]M[delta]K is optical thickness, the mean absorption, [delta]K the conduction flame thickness, P = 4[sigma]TM3/([lambda]/[delta]K) the Planck number, TM the adiabatic flame temperature, [lambda] the thermal conductivity, and [omega] the albedo, the ratio of scattering to extinction.