Multiple mapping conditioning of turbulent jet diffusion flames

Vogiatzaki, K., Kronenburg, A, Cleary, M.J. and Kent, J.H. (2009). Multiple mapping conditioning of turbulent jet diffusion flames. In: Proceedings of the Combustion Institute. 32nd International Symposium on Combustion, Montréal, QC, Canada, (1679-1685). 3-8 August, 2008. doi:10.1016/j.proci.2008.06.164

Author Vogiatzaki, K.
Kronenburg, A
Cleary, M.J.
Kent, J.H.
Title of paper Multiple mapping conditioning of turbulent jet diffusion flames
Conference name 32nd International Symposium on Combustion
Conference location Montréal, QC, Canada
Conference dates 3-8 August, 2008
Proceedings title Proceedings of the Combustion Institute   Check publisher's open access policy
Journal name Proceedings of the Combustion Institute   Check publisher's open access policy
Place of Publication Pittsburg, Pe, U.S.A.
Publisher Combustion Institute
Publication Year 2009
Year available 2008
Sub-type Fully published paper
DOI 10.1016/j.proci.2008.06.164
ISSN 1540-7489
Volume 32
Issue 2
Start page 1679
End page 1685
Total pages 7
Language eng
Abstract/Summary The multiple mapping conditioning (MMC) approach is applied to two non-piloted CH4/H2/N2 turbulent jet diffusion flames with Reynolds numbers of Re = 15,200 and 22,800. The work presented here examines primarily the suitability of MMC to simulate CH4/H2 flames with varying Re numbers. The equations are solved in a prescribed Gaussian reference space with only one stochastic reference variable emulating the fluctuations of mixture fraction. The mixture fraction is considered as the only major species on which the remaining minor species are conditioned. Fluctuations around the conditional means are ignored. It is shown that the statistics of the mapped reference field are an accurate model for the statistics of the physical field for both flames. A transformation of the Gaussian reference space introduced in previous work on MMC is used to express the MMC model in the same form as CMC. The most important advantage of this transformation is that the conditionally averaged scalar dissipation term is in a closed form. The corresponding temperature and reactive species predictions are generally in good agreement with experimental data. The application to real laboratory flames and the assessment of the new conditional scalar dissipation model for the closure of the singly conditioned CMC equation is the major novelty of this paper. The results are therefore primarily examined with respect to changes of the conditionally averaged quantities in mixture fraction space.
Subjects 0913 Mechanical Engineering
Keyword Turbulent diffusion flame
Scalar mixing
Multiple mapping conditioning
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
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Created: Fri, 24 Sep 2010, 11:48:56 EST by Dr Matthew Cleary on behalf of School of Mechanical and Mining Engineering