The effects of chemical kinetic mechanisms on large eddy simulation (LES) of a nonpremixed hydrogen jet flame

Zhou, Xuejin and Jiang, Xi and Mira Martinez, Daniel (2016) The effects of chemical kinetic mechanisms on large eddy simulation (LES) of a nonpremixed hydrogen jet flame. International Journal of Hydrogen Energy, 41 (26). pp. 11427-11440. ISSN 0360-3199

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Abstract

Five different chemical mechanisms for hydrogen combustion are employed in large eddy simulation of a nonpremixed hydrogen jet flame to investigate the ability of these mechanisms to represent the turbulence-chemistry interactions and other combustion phenomena. The mechanisms studied include a reduced mechanism, two detailed H2/O2 reaction mechanisms, as well as a detailed H2/CO mechanism and the GRI3.0 mechanism. Linear eddy model is incorporated to evaluate the effect of turbulence-chemistry interactions. Extensive simulations of a well-known experimental case (German Aerospace Centre DLR nonpremixed flame M2) have been performed for the purpose of validation. Comparisons against experimental data including scalar distribution profiles are presented where a reasonable agreement is observed for the detailed mechanisms. Flux analyses of the species conservation equations and ignition delay time tests showed that chemical kinetics plays a role in the development of flame structures in the jet flame. This study highlights the importance of precise descriptions of the chemical kinetics in LES of nonpremixed hydrogen combustion.

Item Type:
Journal Article
Journal or Publication Title:
International Journal of Hydrogen Energy
Additional Information:
This is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 41, 26, 2016 DOI: 10.1016/j.ijhydene.2016.04.079
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2105
Subjects:
ID Code:
79418
Deposited By:
Deposited On:
30 Aug 2016 10:14
Refereed?:
Yes
Published?:
Published
Last Modified:
27 Sep 2020 03:09