メタン空気対向流火炎中のNO生成に関する化学反応モデルの検討  [in Japanese] Study on Adopted Chemical Kinetics for Production of NO in Methane-Air Counterflow Flames  [in Japanese]

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Abstract

<p>The effects of adopted reaction mechanism on Nitrogen Oxide (NO) formation processes in methane-air counterflow diffusion and double flames were studied numerically. Miller and Bowman (M&B) kinetics had widely been used in the past to predict NO formation in methane-air flames. GRI-Mech. 2.11 (GRI), on the other hand, have been more popular recently in the studies of methane-air flames. The objective of present study is to make clear the difference of NO emission characteristics predicted by these two kinetics, and then to find out the cause of observed difference. The analytical methods applied were those developed by the present authors. They are 1. Separation of contribution of respective four NO formation mechanisms, 2. Quantitative reaction pass diagram, and 3. Sensitivity analysis of each elementally reaction. It was found that GRI predicts more NO production than M&B through Fenimore mechanism, whereas the production behavior through thermal mechanism remains the same for the both kinetics. The increase is partly because that in GRI a new formation reaction NNH + O ⇔ NH + NO is included, and the contribution of this reaction is appreciable. Another reason is that the rate constants of HCNO + H ⇔ HCN + OH are smaller and the contribution of NO destruction route is smaller in GRI.</p>

Journal

  • Journal of the Combustion Society of Japan

    Journal of the Combustion Society of Japan 44(128), 103-112, 2002-05-31

    Combustion Society of Japan

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Codes

  • NII Article ID (NAID)
    10008838741
  • NII NACSIS-CAT ID (NCID)
    AA11658490
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    13471864
  • NDL Article ID
    6196702
  • NDL Source Classification
    ZP27(科学技術--化学・化学工業--燃料)
  • NDL Call No.
    Z17-645
  • Data Source
    CJP  NDL  J-STAGE 
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