Nitric oxide formation in H2/CO syngas non-premixed jet flames
Nitric oxide formation in H2/CO syngas non-premixed jet flames
Direct numerical simulations (DNS) of high hydrogen content (HHC) syngas nonpremixed jet flames have been carried out to study the nitric oxide (NO) formation. The detailed chemistry employed is the GRI 3.0 updated with the influence of the NCN radical chemistry using flamelet generated manifolds (FGM). Preferential diffusion effects have been considered via FGM tabulation and the progress variable transport equation. The results indicate a strong correlation between the flame temperature and NO concentration for pure H2 flame, in which NO formation is characterised by the thermal and NNH mechanisms. The results also indicate a rapid decrease of maximum NO values in the syngas mixtures due to lower temperatures associated with the CO-dilution into H2, thereby increasing the contribution of the prompt-NO mechanism via CH radicals.
Ranga Dinesh, K.K.J.
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Richardson, E.S.
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van Oijen, J.A
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Luo, K.H.
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Jiang, X
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29 September 2014
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Richardson, E.S.
a8357516-e871-40d8-8a53-de7847aa2d08
van Oijen, J.A
57e7e907-4a20-4c77-be43-b3722516ea7f
Luo, K.H.
1c9be6c6-e956-4b12-af13-32ea855c69f3
Jiang, X
69bfa956-bad2-4c93-b007-7c2392ffbbdc
Ranga Dinesh, K.K.J., Richardson, E.S., van Oijen, J.A, Luo, K.H. and Jiang, X
(2014)
Nitric oxide formation in H2/CO syngas non-premixed jet flames.
12th International Conference on Combustion and Energy Utilization (ICCEU), Lancaster, United Kingdom.
29 Sep - 03 Oct 2014.
4 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Direct numerical simulations (DNS) of high hydrogen content (HHC) syngas nonpremixed jet flames have been carried out to study the nitric oxide (NO) formation. The detailed chemistry employed is the GRI 3.0 updated with the influence of the NCN radical chemistry using flamelet generated manifolds (FGM). Preferential diffusion effects have been considered via FGM tabulation and the progress variable transport equation. The results indicate a strong correlation between the flame temperature and NO concentration for pure H2 flame, in which NO formation is characterised by the thermal and NNH mechanisms. The results also indicate a rapid decrease of maximum NO values in the syngas mixtures due to lower temperatures associated with the CO-dilution into H2, thereby increasing the contribution of the prompt-NO mechanism via CH radicals.
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Published date: 29 September 2014
Venue - Dates:
12th International Conference on Combustion and Energy Utilization (ICCEU), Lancaster, United Kingdom, 2014-09-29 - 2014-10-03
Organisations:
Faculty of Engineering and the Environment
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Local EPrints ID: 369790
URI: http://eprints.soton.ac.uk/id/eprint/369790
PURE UUID: 6ce33681-67a8-4af9-aced-67b6e421c4f5
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Date deposited: 07 Oct 2014 14:55
Last modified: 15 Mar 2024 03:47
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Contributors
Author:
J.A van Oijen
Author:
K.H. Luo
Author:
X Jiang
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