Simultaneous OH-PLIF/PAH-PLIF/LII on high-Reynolds number turbulent jet diffusion flames at elevated pressure

Wesley Boyette, Anthony Bennett, Ramgopal Sampath, Thibault Guiberti, William L. Roberts

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

While it is known that the production of soot is highly dependent on pressure, very little experimental data on sooting turbulent flames at elevated pressures exists in the literature. In this study, three piloted turbulent nonpremixed ethylene-nitrogen jet flames are examined over a range of pressures and Reynolds numbers. Simultaneous PLIF/LII is used to characterize the spatial distributions of OH, PAH, and soot. As with previous experiments at atmospheric pressure, all of the flames are characterized by a soot formation region, followed downstream by a region of turbulent mixing, and finally a soot oxidation region. The soot concentration increases with pressure (and Reynolds number), while the soot intermittency decreases. The maximum mean soot volume fraction scales with p2.1.
Original languageEnglish (US)
Title of host publication12th Asia-Pacific Conference on Combustion, ASPACC 2019
PublisherCombustion Institute
StatePublished - Jan 1 2019

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