Spatial and temporal profiles of soot particle diameters were obtained in premixed, flat, ethylene-oxygen-argon flames stabilized with either a flat plate or a chimney. Vertical components of the gas flow velocities were determined by a soot vaporization technique which was demonstrated to be accurate for velocity measurements in these flames. Although a difference in the rate of growth and final diameters of particles in the plate- and chimney-stabilized flames would be inferred from the spatial profiles, the temporal profiles indicate no difference in particle growth or size.
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