On PAH formation in strained counterflow diffusion flames

被引:47
作者
Böhm, H
Kohse-Höinghaus, K
Lacas, F
Rolon, C
Darabiha, N
Candel, S
机构
[1] Univ Bielefeld, D-33615 Bielefeld, Germany
[2] CNRS, Lab EM2C, F-92295 Chatenay Malabry, France
[3] ECP, F-92295 Chatenay Malabry, France
关键词
D O I
10.1016/S0010-2180(00)00188-7
中图分类号
O414.1 [热力学];
学科分类号
摘要
The structural response of methane/air and methane-nitrogen/air counterflow diffusion flames to strain was investigated by measurements and computations. The numerical predictions were found to be in reasonably good agreement with the experiments. Different reaction pathways leading to PAH formation are examined computationally to obtain a deeper understanding of the process of soot precursor formation in strained diffusion flames. Both experimental and computational results indicate that the concentration of C2H2 and C3H3 as well as that of the PAH, leading candidates for soot precursor formation, diminish with increasing strain rates. The decrease of the PAH is caused by a depletion of the benzene precursors. In looking to find control parameters for strained reactive flows, it is suggested to image strain rates based on the CH2O respectively CHO, to C2H2 ratio. (C) 2001 by The Combustion Institute.
引用
收藏
页码:127 / 136
页数:10
相关论文
共 50 条
[41]   FORMATION OF PAH AND SOOT IN FLAMES [J].
MARR, JA ;
LONGWELL, JP ;
HOWARD, JB .
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1993, 206 :89-PHYS
[42]   Soot Modeling of Ethylene Counterflow Diffusion Flames [J].
Pejpichestakul, Warumporn ;
Frassoldati, Alessio ;
Parente, Alessandro ;
Faravelli, Tiziano .
COMBUSTION SCIENCE AND TECHNOLOGY, 2019, 191 (09) :1473-1483
[43]   Kinetic modeling of counterflow diffusion flames of butadiene [J].
Granata, S ;
Faravelli, T ;
Ranzi, E ;
Olten, N ;
Senkan, S .
COMBUSTION AND FLAME, 2002, 131 (03) :273-284
[44]   Counterflow diffusion flames with unsteady strain rates [J].
Im, HG ;
Bechtold, JK ;
Law, CK .
COMBUSTION SCIENCE AND TECHNOLOGY, 1995, 106 (4-6) :345-361
[45]   Multiradii modeling of counterflow spray diffusion flames [J].
Dakhlia, RB ;
Giovangigli, V .
PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2000, 28 :1039-1045
[46]   Multiradii modeling of counterflow spray diffusion flames [J].
Ben Dakhlia, R. ;
Giovangigli, V. .
Proceedings of the Combustion Institute, 2000, 28 (01) :1039-1045
[47]   Extinction of counterflow diffusion flames with halon replacements [J].
Saso, Y ;
Saito, N ;
Liao, CH ;
Ogawa, Y .
FIRE SAFETY JOURNAL, 1996, 26 (04) :303-326
[48]   EFFECTS OF SORET DIFFUSION ON PREMIXED COUNTERFLOW FLAMES [J].
Han, Wang ;
Chen, Zheng .
COMBUSTION SCIENCE AND TECHNOLOGY, 2015, 187 (08) :1195-1207
[49]   Studies of counterflow diffusion flames at low pressures [J].
Cor, JJ ;
Branch, MC .
COMBUSTION SCIENCE AND TECHNOLOGY, 1997, 127 (1-6) :71-88
[50]   Behavior of bicarbonate powders in counterflow diffusion flames [J].
Reed, MD ;
Williams, BA ;
Sheinson, RS ;
Fleming, JW .
CHEMICAL AND PHYSICAL PROCESSES IN COMBUSTION, 1997, :83-86