Effects of CH−NO Interactions on Kinetics of Prompt NO in High-Pressure Counterflow Flames
Effects of CH−NO Interactions on Kinetics of Prompt NO in High-Pressure Counterflow Flames
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DOI：
10.1021/ef700327a
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发表时间：
2008
期刊：
影响因子：
5.3
通讯作者：
Sameer V. Naik;N. Laurendeau
中科院分区：
文献类型：
--
作者：
Sameer V. Naik;N. Laurendeau
激光诱导荧光（LIF）测量一氧化氮（NO）和次甲基（CH），以前报道的占主导地位的层流，逆流，甲烷-空气非预混火焰在20 s-1的全球应变率和压力从1到6大气压，分析考虑复杂的CH-NO动力学的三个重要方面。首先，净反应速率作为压力的函数进行了研究，以了解在2和4个大气压之间的最大[CH]和[NO]中观察到的峰。其次，关键的基本反应进行了比较，两个详细的化学动力学机制，GRI 3.0和Lindstedt，为了研究计算的[CH]和[NO]的差异。第三，速率系数的变化进行了研究，这些基本反应涉及CH强烈影响NO浓度在这些非预混火焰。对直接影响NO生成和破坏的反应步骤，也考虑了速率系数。
Laser-induced fluorescence (LIF) measurements of nitric oxide (NO) and methylidyne (CH), previously reported for prompt-dominated laminar, counterflow, methane−air non-premixed flames at a global strain rate of 20 s−1 and pressures from 1 to 6 atm, are analyzed by considering three important aspects of complex CH−NO kinetics. First, net reaction rates are studied as a function of pressure so as to understand the observed peaks in maximum [CH] and [NO] between 2 and 4 atm. Second, key elementary reactions are compared for two detailed chemical kinetic mechanisms, GRI 3.0 and Lindstedt, in order to investigate differences in computed [CH] and [NO]. Third, variations in rate coefficients are studied for those elementary reactions involving CH that strongly influence NO concentrations in these non-premixed flames. Rate coefficients are also considered for reaction steps which directly affect the formation and destruction of NO. On the basis of all three inquiries, rate coefficients for controlling elementary ...