On the possible coexistence of two different regimes of metal particle combustion

Igor Altman, Andrew Demko, Kevin Hill, Michelle Pantoya

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The coexistence of two regimes of aluminum (Al) particle combustion is discussed. A slower regime occurs at a low energy accommodation coefficient (EAC) and is usually observed in Al combustion experiments. A faster regime at high EAC is also possible. The combustion enhancement observed for pre-treated Al particles can be interpreted as a switch from the slower combustion regime to the faster regime. The value of EAC is controlled by the thermionic emission of electrons. A relationship between Al particle pre-treatment and the work function, which governs the thermionic emission, and, therefore, the EAC, is a subject of further studies.

Original languageEnglish
Pages (from-to)416-419
Number of pages4
JournalCombustion and Flame
Volume221
DOIs
StatePublished - Nov 2020

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