Vortex-induced flame extinction in two-phase counterflow diffusion flames with CH planar laser-induced fluorescence and particle-image velocimetry - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied optics Année : 2003

Vortex-induced flame extinction in two-phase counterflow diffusion flames with CH planar laser-induced fluorescence and particle-image velocimetry

Résumé

Abstract: Here the interaction between a laminar two-phase, non-pre-mixed counterflow flame and a vortex is examined. Special emphasis is given to the influence of different flame and vortex parameters on the extinction behavior of the flame. Simultaneaous planar laser-induced fluorescence of the CH radical layer produced by the flame and particle-image velocimetry measurements of the flowfield are used to characterize the flame-vortex interaction. These simultaneous diagnostics are used for the first time in this configuration. The extinction processes occurring during the flame-vortex interaction can be analyzed by this method, especially the influence of strain at the flame surface. The influence of the droplets on the extinction behavior appears clearly compared with a fully gaseous flame. The spray flame is weaker and extinguishes earlier than does a. gaseous flame. In the measurement's an additional broadband signal in the vicinity of the CH layer is probably due to the induced fluorescence of polycyclic aromatic hydrocarbons, excited at the same wavelength.
Fichier non déposé

Dates et versions

hal-00270519 , version 1 (04-04-2008)

Identifiants

Citer

Alix Lemaire, Terrence Meyer, Katia Zahringer, Juan-Carlos Rolon, Jim R. Gord. Vortex-induced flame extinction in two-phase counterflow diffusion flames with CH planar laser-induced fluorescence and particle-image velocimetry. Applied optics, 2003, Volume: 42 (Issue: 12), pp.Pages: 2063-2071. ⟨10.1364/ao.42.002063⟩. ⟨hal-00270519⟩
46 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More