Journal
PROCEEDINGS OF THE COMBUSTION INSTITUTE
Volume 32, Issue -, Pages 1173-1180Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.proci.2008.06.075
Keywords
Cellular flames; Lean hydrogen flames; Multicomponent transport; Soret effect; Thermal diffusion
Funding
- U.S. Department of Energy [DE-AC02-05CH11231]
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Comparatively little attention has been given to multicomponent diffusion effects in lean hydrogen-air flames, in spite of the importance of these flames in safety and their potential importance to future energy technologies. Prior direct numerical simulations either have considered only the mixture-averaged transport model, or have been limited to stabilized flames that do not exhibit the thermo-diffusive instability. The so-called full, multicomponent transport model with cross-diffusion is found to predict hotter, significantly faster flames with much faster extinction and division of cellular structures. (C) 2009 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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