| Téléchargement | - Voir le manuscrit accepté : Numerical investigation of thermal diffusion influence on soot formation in ethylene/air diffusion flames (PDF, 863 Kio)
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| Auteur | Rechercher : Guo, H.; Rechercher : Liu, F.1; Rechercher : Smallwood, G.J.; Rechercher : Gulder, O.L. |
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| Affiliation | - Conseil national de recherches du Canada. Institut de technologie des procédés chimiques et de l'environnement du CNRC
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| Format | Texte, Article |
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| Conférence | The 10th Annual Conference of the CFD Society of Canada: Windsor, On, June 9-11, 2002 |
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| Résumé | A numerical investigation of the thermal diffusion influence on soot formation in coflow ethylene/air laminar diffusion flames has been conducted. Detailed reaction mechanism and complex thermal and transport properties were employed. The fully elliptic governing equations were solved. Radiation heat transfer from the flames was obtained by the discrete ordinate method coupled to a SNBCK-based wide band model. A simplified two-equation soot model was used. The thermal diffusion velocities were calculated according to the thermal diffusion coefficients that were evaluated based on multicomponent properties. The results show that thermal diffusion does affect soot formation in ethylene/air diffusion flames. Soot volume fraction is overpredicted if thermal diffusion is neglected. The influence of thermal diffusion is enhanced if there are lighter species, such as helium, in the fuel or the air streams. For instance, the peak integrated soot volume fraction doubles if thermal diffusion is not taken into account in the simulation for the flame with helium addition to the air stream. |
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| Date de publication | 2002 |
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| Dans | |
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| Langue | anglais |
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| Numéro du CNRC | NRCC 51467 |
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| Numéro NPARC | 12338495 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | b4936ee1-b011-4ef4-9230-bb8280e4eb71 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2020-04-06 |
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