Computational fluid dynamics modelling toward clean combustion
Computational fluid dynamics modelling toward clean combustion
A turbulent hydrogen-air nonpremixed jet flame is studied using three-dimensional large eddy simulation (LES) and laminar flamelet model based on detailed chemical kinetics. The LES solves the governing equations on a structured Cartesian grid using a finite volume method, with turbulence and combustion modelling based on the localised dynamic Smagorinsky model and the steady laminar flamelet model respectively. The LES results are validated against experimental measurements and overall the LES yields good qualitative and quantitative agreement with the experimental observations. Analysis showed that the LES gives good prediction of the flow field, flame temperature and major species. The three-dimensional transient LES demonstrates the variation of low and high temperature structures and both transient and mean predictions show that the high temperature regions and combustion product appear close to the jet centreline. The present findings provide useful details on fundamental issues of turbulence-chemistry interactions of hydrogen combustion and help to identify potential pathways for combustion modelling towards clean combustion.
hydrogen combustion, turbulent jet, les, laminar flamelet model
49-65
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Kirkpatrick, M.P.
cf76adda-898f-472d-a93a-c55d29b06fba
Odedra, A.
f7907676-583c-4a5d-8222-06ac00d796a4
2012
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Kirkpatrick, M.P.
cf76adda-898f-472d-a93a-c55d29b06fba
Odedra, A.
f7907676-583c-4a5d-8222-06ac00d796a4
Ranga Dinesh, K.K.J., Kirkpatrick, M.P. and Odedra, A.
(2012)
Computational fluid dynamics modelling toward clean combustion.
Computational Thermal Sciences, 4 (1), .
(doi:10.1615/ComputThermalScien.v4.i1).
Abstract
A turbulent hydrogen-air nonpremixed jet flame is studied using three-dimensional large eddy simulation (LES) and laminar flamelet model based on detailed chemical kinetics. The LES solves the governing equations on a structured Cartesian grid using a finite volume method, with turbulence and combustion modelling based on the localised dynamic Smagorinsky model and the steady laminar flamelet model respectively. The LES results are validated against experimental measurements and overall the LES yields good qualitative and quantitative agreement with the experimental observations. Analysis showed that the LES gives good prediction of the flow field, flame temperature and major species. The three-dimensional transient LES demonstrates the variation of low and high temperature structures and both transient and mean predictions show that the high temperature regions and combustion product appear close to the jet centreline. The present findings provide useful details on fundamental issues of turbulence-chemistry interactions of hydrogen combustion and help to identify potential pathways for combustion modelling towards clean combustion.
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Published date: 2012
Keywords:
hydrogen combustion, turbulent jet, les, laminar flamelet model
Organisations:
Engineering Science Unit
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Local EPrints ID: 347355
URI: http://eprints.soton.ac.uk/id/eprint/347355
ISSN: 1940-2503
PURE UUID: bc5e102f-c5d5-4e17-91d5-8685e43a0a0f
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Date deposited: 25 Jan 2013 16:59
Last modified: 15 Mar 2024 03:46
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Author:
M.P. Kirkpatrick
Author:
A. Odedra
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