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Consequences of Surface Deposition of Molten Aluminum in High-Temperature Oxidizing Environments

[+] Author Affiliations
John C. Hewson, Vernon F. Nicolette, William W. Erikson

Sandia National Laboratories, Albuquerque, NM

Paper No. HT2009-88634, pp. 201-209; 9 pages
doi:10.1115/HT2009-88634
From:
  • ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
  • Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4358-1 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME

abstract

In a potential accident scenario with a solid-propellant fire, aluminum present in the propellant and in surrounding structures is exposed to high-temperature environments. The enthalpy present in the aluminum particles is a substantial component of the heat release, both in terms of the particle sensible energy and its chemical energy. This paper examines the consequences of the deposition of aluminum particles present in the propellant in terms of heat transfer to surfaces. Also examined is the possibility that deposited aluminum will ignite in the high-temperature oxidizing environment. The examination is made using a computational fluid dynamics approach with some new models to describe the aluminum oxidation. In addition, these models provide a means to predict the aluminum ignition criteria that will be discussed.

Copyright © 2009 by ASME

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