On PAH formation in strained counterflow diffusion flames

作者: H Böhm , K Kohse-Höinghaus , F Lacas , C Rolon , N Darabiha

DOI: 10.1016/S0010-2180(00)00188-7

关键词: Diffusion (business)Diffusion flameStrain (chemistry)Flame structureChemical physicsOrganic chemistrySootReaction mechanismMethaneBenzeneChemistry

摘要: The structural response of methane/air and methane-nitrogen/air counterflow diffusion flames to strain was investigated by measurements computations. numerical predictions were found be in reasonably good agreement with the experiments. Different reaction pathways leading PAH formation are examined computationally obtain a deeper understanding process soot precursor strained flames. Both experimental computational results indicate that concentration C2H2 C3H3, as well PAH, candidates for formation, diminish increasing rates. decrease is caused depletion benzene precursors. In looking find control parameters reactive flows, it suggested image rates based on CH2O, respectively CHO, ratio.

参考文章(40)
J. C. Rolon, D. Veynante, J. P. Martin, F. Durst, Counter jet stagnation flows Experiments in Fluids. ,vol. 11, pp. 313- 324 ,(1991) , 10.1007/BF00194863
C.M. Megaridis, R.A. Dobbins, Soot aerosol dynamics in a laminar ethylene diffusion flame Symposium (International) on Combustion. ,vol. 22, pp. 353- 362 ,(1989) , 10.1016/S0082-0784(89)80041-4
J.Houston Miller, W.Gary Mallard, Kermit C. Smyth, The observation of laser-induced visible fluorescence in sooting diffusion flames Combustion and Flame. ,vol. 47, pp. 205- 214 ,(1982) , 10.1016/0010-2180(82)90101-8
J.Y. Hwang, S.H. Chung, W. Lee, Effects of oxygen and propane addition on soot formation in counterflow ethylene flames and the role of C3 chemistry Symposium (International) on Combustion. ,vol. 27, pp. 1531- 1538 ,(1998) , 10.1016/S0082-0784(98)80561-4
R.J. Santoro, H.G. Semerjian, Soot formation in diffusion flames: Flow rate, fuel species and temperature effects Symposium (International) on Combustion. ,vol. 20, pp. 997- 1006 ,(1985) , 10.1016/S0082-0784(85)80589-0
F. Lacas, N. Darabiha, P. Versaevel, J.C. Rolon, S. Candel, Influence of droplet number density on the structure of strained laminar spray flames Symposium (International) on Combustion. ,vol. 24, pp. 1523- 1529 ,(1992) , 10.1016/S0082-0784(06)80177-3
G. Dixon-Lewis, M. Missaghi, Structure and extinction limits of counterflow diffusion flames of hydrogen-nitrogen mixtures in air Symposium (International) on Combustion. ,vol. 22, pp. 1461- 1470 ,(1989) , 10.1016/S0082-0784(89)80156-0
K. N. C. Bray, Paul A. Libby, J. B. Moss, Flamelet Crossing Frequencies and Mean Reaction Rates in Premixed Turbulent Combustion Combustion Science and Technology. ,vol. 41, pp. 143- 172 ,(1984) , 10.1080/00102208408923827