An attempt for applying formulation of the carbon combustion in the stagnation flowfield to some experimental comparisons related to the boundary layer combustion
An attempt for applying formulation of the carbon combustion in the stagnation flowfield to some experimental comparisons related to the boundary layer combustion
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DOI：
10.1016/j.combustflame.2013.12.003
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发表时间：
2014-06-01
影响因子：
4.4
通讯作者：
Makino, Atsushi
中科院分区：
文献类型：
--
作者：
Makino, Atsushi
本文试图利用文献中似乎与滞止流场中碳燃烧无关的实验数据进行实验比较。利用文献中报道的空气热化学分析，考虑表面C-O-2和C-O-2反应以及气相CO-O-2反应，通过使用自然对数项的转移数，得出极限情况下燃烧响应的显式燃烧速率表达式。本文选择了氧化剂冲击射流中的碳燃烧、气流中的平面圆柱中的碳燃烧、自然对流中的碳燃烧和旋转圆盘中的碳燃烧。尽管实验情况似乎与滞止流场的情况大不相同，但由于对这些情况背后的相似性作了适当的评价，因此，在实验比较中，一般来说，已证明是相当一致的。此外，由于这一确定，已经证明，这些流动构型的代表部分可以由一个单一的参数来唯一地确定，就象在滞止流场中的参数一样，称为速度梯度，从而进一步使我们能够对这些流动中代表位置处的燃烧速率作出公正的估计。至于所证明的公平协议，它表明，这里使用的公式已经抓住了碳燃烧的基本特征，即使在这些流动中。各种贡献，不仅定性/定量研究，但也为实际应用的进一步预期，通过使用这里使用的配方，因为单一的参数，可以指定的流动配置。(C)2013燃烧研究所爱思唯尔公司出版All rights reserved.
An attempt has been made for conducting experimental comparisons by use of such experimental data in the literature as are seemed to have nothing to do with carbon combustion in the stagnation flowfield. Use has been made of aerothermochemical analyses reported in the literature, with the surface C-O-2 and C-O-2 reactions and the gas-phase CO-O-2 reaction taken into account, with yielding explicit combustion-rate expressions for the combustion response in the limiting situations, by use of the transfer number in terms of the natural logarithmic term. Experiments chosen here are the carbon combustion in an impinging jet of oxidizer, that at the flat-faced cylinder in airflow, that in the natural convection, and that of a rotating disk. In spite of the experimental situation, seemed to be quite different from that in the stagnation flowfield, fair agreement has been demonstrated, in general, in experimental comparisons, because of appropriate evaluations for similarities that lie behind those. In addition, by virtue of this ascertainment, it has turned out that representative parts of those flow configurations can be specified uniquely by a single parameter, just like that in the stagnation flowfield, called the velocity gradient, with further allowing us fair estimations of the combustion rates at the representative positions in those flows. As for the fair agreement being demonstrated, it suggests that the formulation used here has captured the essential feature of the carbon combustion, even in those flows. Various contributions not only for qualitative/quantitative studies but also for practical applications are further anticipated, by use of the formulation used here, because of the single parameter that can specify the flow configuration. (C) 2013 The Combustion Institute. Published by Elsevier Inc. All rights reserved.