Hydrogen-enriched nonpremixed jet flames : effects of preferential diffusion

K.K.J. Ranga Dinesh, X. Jiang, J.A. Oijen, van, R.J.M. Bastiaans, L.P.H. Goey, de

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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.
LanguageEnglish
Pages4848-4863
Number of pages16
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number11
DOIs
StatePublished - 2013

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Hydrogen
hydrogen
flames
Combustion equipment
synthesis gas
Direct numerical simulation
direct numerical simulation
Reaction kinetics
equivalence
Reynolds number
reaction kinetics
heat transfer
grids
shift
interactions
Temperature
temperature

Cite this

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title = "Hydrogen-enriched nonpremixed jet flames : effects of preferential diffusion",
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.",
author = "{Ranga Dinesh}, K.K.J. and X. Jiang and {Oijen, van}, J.A. and R.J.M. Bastiaans and {Goey, de}, L.P.H.",
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Hydrogen-enriched nonpremixed jet flames : effects of preferential diffusion. / Ranga Dinesh, K.K.J.; Jiang, X.; Oijen, van, J.A.; Bastiaans, R.J.M.; Goey, de, L.P.H.

In: International Journal of Hydrogen Energy, Vol. 38, No. 11, 2013, p. 4848-4863.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Hydrogen-enriched nonpremixed jet flames : effects of preferential diffusion

AU - Ranga Dinesh,K.K.J.

AU - Jiang,X.

AU - Oijen, van,J.A.

AU - Bastiaans,R.J.M.

AU - Goey, de,L.P.H.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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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