Analysis of the influence of nanometric aluminum particle vaporization on flame propagation in bulk powder media

Birce Dikici, Michelle L. Pantoya, Benjamin D. Shaw

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The combustion of nanometric aluminum (Al) powder with an oxidizer such as molybdenum trioxide, MoO3 is studied analytically. The analysis was performed to correlate individual Al particle gasification rates to macroscopic flame propagation rates observed in flame tube experiments. A liquid droplet evaporation model is applied. Results show that particles below about 23 nm in diameter evaporate before appreciable chemical reactions occur. The resulting gas mixture would then burn as a gaseous premixed flame, producing solid particles as combustion products. Activation energy and pre-exponential factors are examined from the literature for both solid-state and gas phase Al reactivity models. The analytical results show good agreement with experimental observation only for the gas phase reactivity models. These results suggest that macroscopic flame propagation in a tube with sufficiently small particles can be modeled as laminar premixed gas flame.

Original languageEnglish
Title of host publication48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
StatePublished - 2010
Event48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: Jan 4 2010Jan 7 2010

Publication series

Name48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Conference

Conference48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period01/4/1001/7/10

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    Dikici, B., Pantoya, M. L., & Shaw, B. D. (2010). Analysis of the influence of nanometric aluminum particle vaporization on flame propagation in bulk powder media. In 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition [2010-1598] (48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition).