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Capturing localised extinction in Sandia Flame F with LES-CMC
journal contribution
posted on 2012-12-07, 11:09 authored by Andrew GarmoryAndrew Garmory, E. MastorakosA Large Eddy Simulation (LES) using the Conditional Moment Closure (CMC) as a sub-grid turbulence-chemistry model has been applied to piloted jet diffusion flames (Sandia D&F). A 3D CMC grid was used which allowed different CMC boundary conditions to be applied in the jet and pilot streams. The code was found to give very good agreement with experiment in the low extinction case of Flame D. For Flame F transient extinction and re-ignition events were observed with LES–CMC which lead to reductions in averaged unconditional and conditional temperature consistent with experimental observations. Further analysis revealed that the CMC extinction/ignition events were the result of a combination of high conditional scalar dissipation rate and transport in the CMC grid.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Citation
GARMORY, A. and MASTORAKOS, E., 2011. Capturing localised extinction in Sandia Flame F with LES-CMC. Proceedings of the Combustion Institute, 33 (1), pp. 1673 - 1680.Publisher
© The Combustion Institute. Published by Elsevier Inc.Version
- AM (Accepted Manuscript)
Publication date
2011Notes
This article was published in the journal, Proceedings of the Combustion Institute [© The Combustion Institute. Published by Elsevier Inc.] and the definitive version is available at: http://dx.doi.org/10.1016/j.proci.2010.06.065ISSN
1540-7489Publisher version
Language
- en