The theory of steady-state laminar jet spray flames is developed in the limit of small Stokes number. The spray is modeled using the sectional approach. A similarity solution is suggested, and it is shown that for typical operating conditions the leading order small Stokes number solution suffices for determining lift-off and blow-out features of the flames. The latter are demonstrated to be strongly dependent on spray properties, in contrast to the Schmidt number dependence only which was predicted by classical laminar jet gaseous flame theory. The strong influence of the ambient oxygen content and the liquid fuel’s evaporation coefficient on flame characteristics, blow-out and lift-off are established.

中文翻译：

---

稳态层流喷射火焰行为的研究

稳态层流喷射火焰理论是在较小的斯托克斯数范围内发展起来的。使用分段方法对喷雾进行建模。提出了一种相似性解决方案，结果表明，对于典型的运行条件，领先的小斯托克斯数解足以确定火焰的升起和吹出特征。与仅通过经典层流喷射气态火焰理论预测的施密特数依赖性相反，后者被证明强烈地依赖于喷雾性能。建立了环境氧含量和液体燃料的蒸发系数对火焰特性，爆燃和升空的强烈影响。