Numerical analysis of flame surface density, flame normal and flame index in syngas nonpremixed impinging flames
Numerical analysis of flame surface density, flame normal and flame index in syngas nonpremixed impinging flames
A non-premixed impinging jet flame is studied using three-dimensional direct numerical simulation with detailed chemical kinetics in order to investigate the influence of fuel variability on flame surface density, flame normal, and flame index for syngas combustion. Analyses indicate that the fuel composition greatly influences the hydrogen (H2)/carbon monoxide (CO)syngas combustion, not only on the local stoichiometric iso-mixture fraction surface distribution but also on the vortical structures in the flow field. As a result of CO addition to hydrogen-enriched combustion, changes of the reaction zone in the flammable layer, shift of peak flame surface density distribution, shift of nonpremixed regions and formation of widely populated scalar dissipation rate with respect to tangential strain rate are all found to appear.
Ranga Dinesh, K.K.J.
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Luo, K.H.
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Jiang, X.
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van Oijen, J.A
57e7e907-4a20-4c77-be43-b3722516ea7f
25 June 2013
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Luo, K.H.
1c9be6c6-e956-4b12-af13-32ea855c69f3
Jiang, X.
008a11fa-f330-4355-b5c6-2878d1ab0f5c
van Oijen, J.A
57e7e907-4a20-4c77-be43-b3722516ea7f
Ranga Dinesh, K.K.J., Luo, K.H., Jiang, X. and van Oijen, J.A
(2013)
Numerical analysis of flame surface density, flame normal and flame index in syngas nonpremixed impinging flames.
6th European Combustion Meeting (ECM 2013), Lund, Sweden.
25 - 28 Jun 2013.
6 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A non-premixed impinging jet flame is studied using three-dimensional direct numerical simulation with detailed chemical kinetics in order to investigate the influence of fuel variability on flame surface density, flame normal, and flame index for syngas combustion. Analyses indicate that the fuel composition greatly influences the hydrogen (H2)/carbon monoxide (CO)syngas combustion, not only on the local stoichiometric iso-mixture fraction surface distribution but also on the vortical structures in the flow field. As a result of CO addition to hydrogen-enriched combustion, changes of the reaction zone in the flammable layer, shift of peak flame surface density distribution, shift of nonpremixed regions and formation of widely populated scalar dissipation rate with respect to tangential strain rate are all found to appear.
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Published date: 25 June 2013
Venue - Dates:
6th European Combustion Meeting (ECM 2013), Lund, Sweden, 2013-06-25 - 2013-06-28
Organisations:
Faculty of Engineering and the Environment
Identifiers
Local EPrints ID: 369785
URI: http://eprints.soton.ac.uk/id/eprint/369785
PURE UUID: 9d5bc67a-fbac-451b-8adb-24d19c57763f
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Date deposited: 07 Oct 2014 14:28
Last modified: 15 Mar 2024 03:47
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Contributors
Author:
K.H. Luo
Author:
X. Jiang
Author:
J.A van Oijen
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