A methodology is presented which allows to predict soot levels produced in simple, one-dimensional laminar flames. The method is applied to the calculation of a set of well documented ethylene/air counterflow diffusion flames, using a detailed chemical mechanism (Davis et al., 1999 [1]) and a semi-empirical, two-equation soot model from Leung and Lindstedt (1991) [2]. Modifications of the original soot model are made in order to retrieve the experimental measurements of Hwang and Chung (2001) [3]. To account for radiative heat losses, a second series of fully coupled gas/soot/radiation simulations of the counterflow flames is performed. This allows to assess the effect of soot and gas radiation on soot formation and on the flame structure.
Une méthodologie est proposée pour le calcul des niveaux de suies produits dans des flammes laminaires monodimensionnelles. Cette méthode est appliquée à une série de flammes de diffusion à contre-courant éthylène/air, largement référencées et documentées dans la littérature, et calculées avec un mécanisme chimique détaillé (Davis et al., 1999 [1]) et le modèle semi-empirique à deux équations de Leung et Lindstedt (1991) [2]. Le modèle de suie a été corrigé afin dʼobtenir un meilleur accord avec les mesures expérimentales de Hwang et Chung (2001) [3]. Afin de prendre en compte les pertes thermiques radiatives, une deuxième série de simulations couplées gaz/suies/rayonnement de ces flammes à contre-courant a été réalisée. Cette démarche permet dʼévaluer lʼeffet du rayonnement des suies et de la phase gazeuse sur la formation des suies et sur la structure de flamme.
Mots-clés : Suies, Rayonnement, Flammes de diffusion à contre-courant
Ignacio Hernández 1; Guillaume Lecocq 1; Damien Poitou 1; Eléonore Riber 1; Bénédicte Cuenot 1
@article{CRMECA_2013__341_1-2_238_0, author = {Ignacio Hern\'andez and Guillaume Lecocq and Damien Poitou and El\'eonore Riber and B\'en\'edicte Cuenot}, title = {Computations of soot formation in ethylene/air counterflow diffusion flames and its interaction with radiation}, journal = {Comptes Rendus. M\'ecanique}, pages = {238--246}, publisher = {Elsevier}, volume = {341}, number = {1-2}, year = {2013}, doi = {10.1016/j.crme.2012.11.005}, language = {en}, }
TY - JOUR AU - Ignacio Hernández AU - Guillaume Lecocq AU - Damien Poitou AU - Eléonore Riber AU - Bénédicte Cuenot TI - Computations of soot formation in ethylene/air counterflow diffusion flames and its interaction with radiation JO - Comptes Rendus. Mécanique PY - 2013 SP - 238 EP - 246 VL - 341 IS - 1-2 PB - Elsevier DO - 10.1016/j.crme.2012.11.005 LA - en ID - CRMECA_2013__341_1-2_238_0 ER -
%0 Journal Article %A Ignacio Hernández %A Guillaume Lecocq %A Damien Poitou %A Eléonore Riber %A Bénédicte Cuenot %T Computations of soot formation in ethylene/air counterflow diffusion flames and its interaction with radiation %J Comptes Rendus. Mécanique %D 2013 %P 238-246 %V 341 %N 1-2 %I Elsevier %R 10.1016/j.crme.2012.11.005 %G en %F CRMECA_2013__341_1-2_238_0
Ignacio Hernández; Guillaume Lecocq; Damien Poitou; Eléonore Riber; Bénédicte Cuenot. Computations of soot formation in ethylene/air counterflow diffusion flames and its interaction with radiation. Comptes Rendus. Mécanique, Combustion, spray and flow dynamics for aerospace propulsion, Volume 341 (2013) no. 1-2, pp. 238-246. doi : 10.1016/j.crme.2012.11.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2012.11.005/
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