Detailed characterization of the combustion of an isolated aluminum particle - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Detailed characterization of the combustion of an isolated aluminum particle

Résumé

The work that is intended to be presented focuses on the combustion of an isolated aluminum particle. A dedicated facility consisting of an electrodynamic levitator allows the charged particle trapped by electrostatic forces to levitate and burn in a controlled atmosphere. The uniform heating of the particle until its ignition temperature is ensured by a CO2 laser whose beam is split to hit the particle from both sides and that is stopped when the combustion is initiated. The coupling of this chamber with optical devices yields crucial information in the characterization of aluminum combustion. Characteristic burning times obtained thanks to the signals of the photomultipliers will be presented for varying ambient conditions (pressure and oxidizer). Then a two-colour pyrometry method assembled with photomultipliers combined with visual information of high temporal resolution from a high-speed camera allows the study of ignition’s phenomenology as well as the evaluation of the ignition temperature of the particle for various atmospheres. Measurements of the global temperature (particle and flame) during the combustion process carried out with the same method will be presented. Finally, the ongoing work will also provide spatially and temporally resolved concentration profiles of the condensed-phase combustion products surrounding the burning droplet using a light extinction method.

Mots clés

Fichier non déposé

Dates et versions

hal-04224473 , version 1 (02-10-2023)

Identifiants

  • HAL Id : hal-04224473 , version 1

Citer

Hugo Keck, Valentin Glasziou, Chauveau Christian, Halter Fabien. Detailed characterization of the combustion of an isolated aluminum particle. Workshop on Metal Fuels and Metal Dust Combustion, Otto von Guericke University Magdeburg; Ruhr University Bochum, Sep 2023, Berlin (Germany), Germany. ⟨hal-04224473⟩
31 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More