Abstract
Mathematical modeling of turbulent diffusion flames requires a knowledge of the distribution of concentration fluctuations in the flame field. The effect of these fluctuations is to broaden the reaction region and extend the flame length beyond the value computed from the mean concentrations. Since it is a simple means of measuring the nozzle fluid concentration and its fluctuations, the light scattering technique formerly applied to isothermal air jets has been developed for use in flames. Measurements are reported for isothermal air jets and stabilized as well as lifted flames.
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