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Abstract
An experimental and a theorietical study of transient radiation properties of strongly radiating turbulent diffusion flames is described. Simultaneous transient measurements of temperatures and volume fractions of soot obtained using a three wavelength emission-absorption probe are reported. Soot volume fractions inferred from absorption measurements are significantly higher than those inferred from emission data suggesting the presence oflarge quantities of relatively cold soot within the flames. The results show effects of progressive radiative cooling with distance from the injector exit. Reasonably good predictions of monochromatic intensities were obtained using a new bivariate stochastic analysis.
