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Soot particle size distribution in a turbulent non-premixed ethylene-nitrogen flame

DOI: 10.1615/ICHMT.2015.THMT-15.1020
pages 487-490

W. R. Boyette
Department of Mechanical Engineering, KAUST, Clean Combustion Research Center, Thuwal, Saudi Arabia

S. Chowdhury
Department of Mechanical Engineering, KAUST, Clean Combustion Research Center, Thuwal, Saudi Arabia

William L. Roberts
Clean Combustion Research Center, King Abdullah University of Science and Technology, Thuwal, Makkah Province, Saudi Arabia


A scanning mobility particle sizer with a nano differential mobility analyzer was used to measure soot particle concentrations in a turbulent non-premixed flame. The burner utilizes a premixed pilot flame which anchors a C2H4/N2 (35/65) central jet with ReD = 20,000. A parametric study of the dilution ratio in the sampling line indicates that soot particle coagulation can be eliminated using a two-stage dilution process. Soot particle concentration PDFs along the flame centerline are presented.

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