考虑热损失的富层流预混多分散喷雾火焰传播研究

IF 1.5 Q3 ENGINEERING, CHEMICAL
G. Kats, J. Greenberg
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引用次数: 2

摘要

对考虑热损失的层流预混喷雾火焰传播进行了数学分析。分析利用了反应速率表达式中Arrhenius指数项的分布近似,得到了层流燃烧速度的隐式表达式,该表达式依赖于燃料的喷雾相关参数、气体相关参数和热损失强度。结果表明,雾滴初始负荷、蒸发系数值和初始粒径分布是影响消光发生的雾剂相关参数。这些参数的组合决定了喷雾热损失在空间上的分布方式,当与体积热损失一起考虑时,这一特征是决定喷雾对火焰传播和熄灭影响的主要因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On Laminar Rich Premixed Polydisperse Spray Flame Propagation with Heat Loss
A mathematical analysis of laminar premixed spray flame propagation with heat loss is presented. The analysis makes use of a distributed approximation of the Arrhenius exponential term in the reaction rate expression and leads to an implicit expression for the laminar burning velocity dependent on the spray-related parameters for the fuel, gas-related parameters and the intensity of the heat losses. It is shown that the initial droplet load, the value of the evaporation coefficient, and the initial size distribution are the spray-related parameters which exert an influence on the onset of extinction. The combination of these parameters governs the manner in which the spray heat loss is distributed spatially and it is this feature that is the main factor, when taken together with volumetric heat loss, which determines the spray’s impact on flame propagation and extinction.
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来源期刊
Journal of Combustion
Journal of Combustion ENGINEERING, CHEMICAL-
CiteScore
2.00
自引率
28.60%
发文量
8
审稿时长
20 weeks
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