Flame stabilization mechanisms and shape transitions in a 3D printed, hydrogen enriched, methane/air low-swirl burner

Par Conseil national de recherches du Canada

DOI	Trouver le DOI : https://doi.org/10.1016/j.ijhydene.2021.01.112
Auteur	Rechercher : An, Qiang¹; Rechercher : Kheirkhah, Sina; Rechercher : Bergthorson, Jeffrey; Rechercher : Yun, Sean¹; Rechercher : Hwang, Jeongjae; Rechercher : Lee, Won June; Rechercher : Kim, Min Kuk Identifiant ORCID : https://orcid.org/0000-0001-8045-0973; Rechercher : Cho, Ju Hyeong; Rechercher : Kim, Han Seok; Rechercher : Vena, Patrizio¹
Affiliation	Conseil national de recherches Canada. Aérospatiale
Bailleur de fonds	Rechercher : Korea Institute of Machinery and Materials
Format	Texte, Article
Sujet	low-swirl combustion; flame stabilization; flame shape transition; hydrogen enrichment; laser diagnostics; heat release rate
Résumé	Flame shapes and their transitions of premixed hydrogen enriched methane flames in a 3D-printed low-swirl burner are studied using simultaneous OH×CH₂O planar laser induced fluorescence and stereoscopic particle image velocimetry. Three different flame shapes are observed, namely bowl-shape, W-shape, and crown-shape. The bowl-shaped flame has its base stabilized through flame-flow velocity balance and its sides stabilized in the inner shear layer. While the bulges of the W-shaped flame rely on a similar stabilization mechanism in the central flow, its outer edges are stabilized by large-scale eddies in the outer shear layer. The crown-shaped flame is also aerodynamically stabilized in the center, but its outer edges are anchored to the burner hardware. At a fixed equivalence ratio, the statistical transitions between flame shapes across test conditions are jointly dominated by hydrogen fraction and bulk velocity. Dynamically, W-to-crown transition is attributed to the upstream propagation and attachment of the flame outer edges.
Date de publication	2021-03-21
Maison d’édition	Elsevier
Dans	International Journal of Hydrogen Energy 46, nº 27 (19 avril 2021) : 14764–14779.
Langue	anglais
Publications évaluées par des pairs	Oui
Identificateur	S036031992100207X
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	4c205e97-e413-4527-833f-89e5a1b14e00
Enregistrement créé	2023-01-17
Enregistrement modifié	2023-01-17

Date de modification :: 2026-02-11