Téléchargement | - Voir le manuscrit accepté : Burning rates and surface characteristics of hydrogen-enriched turbulent lean premixed methane-air flames (PDF, 702 Kio)
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DOI | Trouver le DOI : https://doi.org/10.1115/HT2009-88268 |
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Auteur | Rechercher : Guo, Hongsheng1; Rechercher : Tayebi, Badri; Rechercher : Galizzi, Cedric; Rechercher : Escudié, Dany |
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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 | 2009 ASME Heat Transfer Summer Conference, July 19-23, 2009, San Francisco, California, USA |
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Sujet | Hydrogen enrichment; Turbulent premixed flame; Burning velocity; Preferential diffusion |
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Résumé | The burning rates and surface characteristics of hydrogen-enriched turbulent lean premixed methane-air flames were experimentally studied by laser tomography visualization method using a V-shaped flame configuration. Turbulent burning velocities were measured and the variation of flame surface characteristics due to hydrogen addition was analyzed. The results show that hydrogen addition causes an increase in turbulent burning velocity for lean CH4 -air mixtures when the turbulent level in the unburned mixture is not changed. The increase rate of turbulent burning velocity is higher than that of the corresponding laminar burning velocity, suggesting that the increase in turbulent velocity due to hydrogen addition is caused by not only chemical kinetics effect, but also the variation in flame structure due to turbulence. The further analysis of flame surface characteristics and brush thickness indicate that hydrogen addition slightly decreases local flame surface density, but increases total flame surface area because of the increased flame brush thickness. As a result, turbulent burning velocity is intensified by the increase in total flame surface area and the increased laminar burning velocity, when hydrogen is added. |
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Date de publication | 2009 |
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Dans | |
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Langue | anglais |
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Publications évaluées par des pairs | Oui |
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Numéro du CNRC | NRCC 52003 |
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Numéro NPARC | 15093660 |
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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 | a13def97-523d-459a-b1c7-fa734ba1e0a5 |
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Enregistrement créé | 2010-04-27 |
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Enregistrement modifié | 2020-04-16 |
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