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Article Dans Une Revue Proceedings of the Combustion Institute Année : 2018

Experimental investigation of soot production in a confined swirled flame operating under perfectly premixed rich conditions

Résumé

A detailed understanding of the mechanisms underlying soot production is needed to control particle emissions from practical combustion devices. This requires fundamental investigations of these processes in turbulent combustion systems. This study reports experiments on soot production in a perfectly premixed turbulent flame operating under rich conditions. A swirled ethylene/air flame is stabilized in a confined combustor at atmospheric pressure with full optical access. Quantitative measurements of the soot volume fraction (f v) are carried out with the Laser Induced Incandescence (LII) technique, allowing the characterization of the soot spatial distribution and temporal intermit-tency. While f v is detected by LII mainly in the near-wall region of the burner, light scattering measurements bring complementary information on the presence of particles in the whole chamber. The investigation of a rich perfectly premixed turbulent flame represents an unexplored configuration that provides new insights on soot production in a situation where this process is not dominated by mixing between fuel and air. The data gathered in this situation may be of interest in future developments of modeling methods and their validation for soot prediction.
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Dates et versions

hal-01856559 , version 1 (12-08-2018)

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Mathieu Roussillo, Philippe Scouflaire, Sebastien Candel, Benedetta Franzelli. Experimental investigation of soot production in a confined swirled flame operating under perfectly premixed rich conditions. Proceedings of the Combustion Institute, 2018, 37 (1), pp.893-901. ⟨10.1016/j.proci.2018.06.110⟩. ⟨hal-01856559⟩
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