Formation and consumption of NO in H-2 + O-2 + N-2 flames doped with NO or NH3 at atmospheric pressure

Research output: Contribution to journalArticle

Abstract

Flat premixed burner-stabilized H-2 + O-2 + N-2 flames, neat or doped with 300-1000 ppm of NO or NH3, were studied experimentally using molecular-beam mass-spectrometry and simulated numerically. Spatial profiles of temperature and concentrations of stable species, H-2, O-2, H2O, NO, NH3, and of H and OH radicals obtained at atmospheric pressure in lean (phi = 0.47), near-stoichiometric (phi = 1.1) and rich (phi = 2.0) flames are reported. Good agreement between measured and calculated structure of lean and near-stoichiometric flames was found. Significant discrepancy between simulated and measured profiles of NO concentration was observed in the rich flames. Sensitivity and reaction path analyses revealed reactions responsible for the discrepancy. Modification to the model was proposed to improve an overall agreement with the experiment. (C) 2009 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

Details

Authors
  • A. G. Shmakov
  • O. P. Korobeinichev
  • I. V. Rybitskaya
  • A. A. Chernov
  • D. A. Knyazkov
  • T. A. Bolshova
  • Alexander Konnov
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics

Keywords

  • spectrometry, Molecular-beam mass, Nitrogen oxides, Hydrogen, Flame structure
Original languageEnglish
Pages (from-to)556-565
JournalCombustion and Flame
Volume157
Issue number3
Publication statusPublished - 2010
Publication categoryResearch
Peer-reviewedYes