Measurements of soot, OH, and PAH concentrations in turbulent ethylene/air jet flames

This paper presents results from an investigation of soot formation in turbulent, non-premixed, C2H4/air jet flames. Tests were conducted using a H2-piloted burner with fuel issuing from a 2.18 mm i.d. tube into quiescent ambient air. A range of test conditions was studied using the initial jet velocity (16.2–94.1 m/s) as a parameter. Fuel-jet Reynolds numbers ranged from 4000 to 23,200. Planar laser-induced incandescence (LII) was employed to...