Hydrogen-enriched nonpremixed jet flames: effects of preferential diffusion
Hydrogen-enriched nonpremixed jet flames: effects of preferential diffusion
Influence of preferential diffusion on the dynamics of hydrogen and syngas nonpremixed impinging jet flames was studied using direct numerical simulation and flamelet generated manifolds based on detailed chemical kinetics. The results presented in this study were obtained from a uniform Cartesian grid with 768 × 768 × 768 points. Reynolds number used was Re = 2000, based on the reference quantities. Results reported here indicate that the preferential diffusion significantly affects the structures and the maximum temperature of the hydrogen flame, which deviates significantly from the results obtained without considering the preferential diffusion. The preferential diffusion results in a shift in the equivalence ratio in the reaction zone to leaner conditions. Moreover, the numerical results suggest that the preferential diffusion influences the flame–wall interaction and thus wall heat transfer, which is critical for the design of combustion equipment for clean combustion applications with high hydrogen contents in the fuel.
4848-4863
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Jiang, X.
008a11fa-f330-4355-b5c6-2878d1ab0f5c
van Oijen, J.
72021a7c-153e-43f9-b411-81492b13afd5
Bastiaans, R.
7c9045c2-33ed-4154-a8e7-d8435f4ee14f
de Goey, L.
aa1511d3-3e5c-4a0f-a092-a8160bb805dc
15 April 2013
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Jiang, X.
008a11fa-f330-4355-b5c6-2878d1ab0f5c
van Oijen, J.
72021a7c-153e-43f9-b411-81492b13afd5
Bastiaans, R.
7c9045c2-33ed-4154-a8e7-d8435f4ee14f
de Goey, L.
aa1511d3-3e5c-4a0f-a092-a8160bb805dc
Ranga Dinesh, K.K.J., Jiang, X., van Oijen, J., Bastiaans, R. and de Goey, L.
(2013)
Hydrogen-enriched nonpremixed jet flames: effects of preferential diffusion.
International Journal of Hydrogen Energy, 38 (11), .
(doi:10.1016/j.ijhydene.2013.01.171).
Abstract
Influence of preferential diffusion on the dynamics of hydrogen and syngas nonpremixed impinging jet flames was studied using direct numerical simulation and flamelet generated manifolds based on detailed chemical kinetics. The results presented in this study were obtained from a uniform Cartesian grid with 768 × 768 × 768 points. Reynolds number used was Re = 2000, based on the reference quantities. Results reported here indicate that the preferential diffusion significantly affects the structures and the maximum temperature of the hydrogen flame, which deviates significantly from the results obtained without considering the preferential diffusion. The preferential diffusion results in a shift in the equivalence ratio in the reaction zone to leaner conditions. Moreover, the numerical results suggest that the preferential diffusion influences the flame–wall interaction and thus wall heat transfer, which is critical for the design of combustion equipment for clean combustion applications with high hydrogen contents in the fuel.
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Published date: 15 April 2013
Organisations:
Engineering Science Unit
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Local EPrints ID: 351813
URI: http://eprints.soton.ac.uk/id/eprint/351813
ISSN: 0360-3199
PURE UUID: a1bc3121-c08c-4364-85cd-44fc9b3ec67d
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Date deposited: 25 Apr 2013 13:24
Last modified: 15 Mar 2024 03:46
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Author:
X. Jiang
Author:
J. van Oijen
Author:
R. Bastiaans
Author:
L. de Goey
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