Abstract
A numerical simulation of an axisymmetric confined diffusion flame formed between a C3H8-N2 jet and cof lowing air at 2m/s is presented, for the suppression of soot formation rate by adding N2 gas. Soot reduction is systematically estimated by adjusting the amounts of the added N2 gas.Modeling the formed soot quantity approaches based on the evaluation of the number density of soot radical nuclei and soot particles, under the experimental data measured by Nishida, et al. The mathematical model employs a standard two-equation, k-ε model to calculate the reaction rates.Predictions of a lowering of soot formation rate by adding N2 gas are in reasonable qualitative agreement with experimental data. When the N2 gas of 50 vol.% is added, finally exhausted concentration of soot is decreased the about 10% in compared with non-added N2 gas.
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