Abstract
An experimental study was performed to clarify the flame structure of a burning fuel droplet. OH concentration distributions were measured along diametrical line passing through the front stagnation point of a fuel droplet flame in the gaseous stream. The laser induced fluorescence was applied for the measurement of OH concentration distributions. An Nd:YAG laser-pumped pulsed dye laser emitting monochromatic radiation at a wavelength of 283.62nm was used as the light source for these measurements. The results showed that the maximum of OH concentration was located near the flame front. An increase in the relative humidity in the gaseous stream caused the decrease of OH concentration. The increase in benzene vapor concentration in the gaseous stream around a benzene droplet flame causes the increased maximum OH concentration and the outward extension of the region in which OH is present.
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