TY - JOUR
T1 - On the possible coexistence of two different regimes of metal particle combustion
AU - Altman, Igor
AU - Demko, Andrew
AU - Hill, Kevin
AU - Pantoya, Michelle
N1 - Funding Information:
Funding from the NAVAIR ILIR program managed at the ONR and administered by Dr. Alan Van Nevel is thanked. M.P. acknowledges funding from the Office of Naval Research under grant N00014-19-1-2082 and support from program managers Dr. Chad Stoltz and Mr. Matthew Beyard.
Publisher Copyright:
© 2020
PY - 2020/11
Y1 - 2020/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85089738087&partnerID=8YFLogxK
U2 - 10.1016/j.combustflame.2020.08.015
DO - 10.1016/j.combustflame.2020.08.015
M3 - Article
AN - SCOPUS:85089738087
VL - 221
SP - 416
EP - 419
JO - Combustion and Flame
JF - Combustion and Flame
SN - 0010-2180
ER -