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Effects of Intense Turbulence on NO Formation in Propagating Planar Premixed Flame

Jin, T; Wang, XJ; Luo, KH; Luo, K; Fan, JR; (2018) Effects of Intense Turbulence on NO Formation in Propagating Planar Premixed Flame. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics , 39 (9) pp. 2056-2061. Green open access

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Abstract

Effects of different turbulence intensity on NO formation propagating planar premixed CH4/H2/air flame are investigated via direct numerical simulation. A detailed chemistry mechanism including 28 species and 268 steps is adopted. It is found that turbulent vortex would penetrate the flame front and sustain in the flame inner zone under the condition of high Karlovitz number. Local heat release rate increase to 1.8 times of that found in laminar flame, due to the strong stretch. The turbulent flame velocity based on the consumption rate increase significantly, however the total production rate of NO varies a little. Under intense turbulence, the total production rate of NO in the flame decrease, which is due to the significant decrease of the production rate of prompt NO.

Type: Article
Title: Effects of Intense Turbulence on NO Formation in Propagating Planar Premixed Flame
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: premixed combustion,turbulence intensity, No formation pathway, direct numerical simulation
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10068194
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