Abstract
An experimental investigation has been carried out, using the steady-state burning of n-heptane wested ceramic support spheres. Measurements have been made of mass burning rates, flame temperatures, and composition profiles, and, by means of a cylindrical flame to simplify the analysis, a heat release rate profile through the reaction zone has been obtained. It has been shown that, although mass burning rates and flame positions are consistent with the combustion of small-diameter droplets, the temperatures observed for the support-sphere flames are greater than those observed for droplet burning: this has been attributed to the effect of non-steady-state combustion in droplet burning. In general the results show that existing theoretical models do not adequately represent the combustion of droplets in a weak convective field.
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