THE STRUCTURE AND RADIATION OF AN ETHANOL POOL FIRE

The structure of the flame above a burning 0. 5 m diameter pool of ethanol has been examined. The average concentration of CO//2, CO, H//2O and hydrocarbons, the mean and standard deviation of temperature, and the mean velocity are reported from the surface up to 1. 5 diameters downstream. The local soot absorption coefficient has been found to be less than 0. 7 m** minus **7 everywhere in the fire using a fiber optic laser attenuation probe. Instantaneous temperatures measured simultaneously at 11 positions along the diameter show no correlation between fluctuations on the centerline and at the edge of the fire, and moderate correlation between thermocouple pairs located at similar radial positions across the fire.