Shock tube measurements of combustion of nano-aluminum

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

Abstract

The reaction times and temperatures of nano-aluminum particles burning the reflected shock region of a shock tube was measured experimentally to provide fundamental information on the combustion characteristics of these particles. The particles reacted under temperatures of 1200-2200 K and pressures of 4-32 atm in oxidizers of oxygen and carbon dioxide mixed in varying percentage with nitrogen. An initial bright event was observed where the measured pyrometry temperatures were elevated above the ambient temperature, followed by a decay in light emission to a constant background level where the observed temperature was near the ambient. The timescales of this event varied between 50 to 500 microseconds. Reaction times and temperatures were found to be very dependent on ambient pressure and temperature. In environments where CO2 was the primary oxidizer, the combustion times and temperatures were found significantly slower and cooler than similar environments with O2 serving as the primary oxidizer. The light emission consisted primarily of broadband continuum emission, and very little molecular emission was observed. The combustion behavior of nano-aluminum can be explained by a shrinking core flame structure with condensed-phase diffusion or kinetics controlling the combustion process.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages14046-14053
Number of pages8
ISBN (Print)1563478072, 9781563478079
DOIs
StatePublished - Jan 1 2006
Event44th AIAA Aerospace Sciences Meeting 2006 - Reno, NV, United States
Duration: Jan 9 2006Jan 12 2006

Publication series

NameCollection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Volume19

Other

Other44th AIAA Aerospace Sciences Meeting 2006
CountryUnited States
CityReno, NV
Period1/9/061/12/06

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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    Bazyn, T., Krier, H., & Glumac, N. (2006). Shock tube measurements of combustion of nano-aluminum. In Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting (pp. 14046-14053). (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting; Vol. 19). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2006-1157