Abstract
A model of laminar round diffusion flames is developed which quantitatively relates the maximum soot volume fraction and soot yield in the flame to the smoke point fuel flow rate. The model is based on the similarity behavior of soot volume fraction profiles, soot temperatures, and flame length and diameter. An energy balance relates radiation heat loss by soot to the smoke point flame length where all fuels have a common soot temperature. The model is tested against optically measured soot volume fractions and soot yields over a wide range of fuels. Predictions are generally satisfactory except for some heavily sooting fuels with very short smoke point lengths.
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