Abstract This paper presents an analysis of the effect of the droplet support fiber on the droplet evaporation process. This effect is evaluated for a droplet evaporating in a hot environment at atmospheric pressure using the experimental results of the present study and those in the literature. Selected published results are acquired using similar test conditions and experimental setups as the present data. The only main difference between these studies is the droplet support fiber diameter which varies between 14 µm and 225 µm. The ambient temperature explored in these studies ranges from room temperature up to 973 K. n-Heptane is selected because it is the most common fuel used in these studies. The main findings are that the cross-fiber technique, which uses 14 µm fiber diameters, induces no noticeable heat transfer into the droplet and consequently does not interfere with the evaporation process. In contrast, the classical fiber technique, which uses relatively larger fibers, greatly enhances the droplet evaporation rate as a consequence of increased conduction heat transfer through the fiber. A correlation is proposed to quantify the level of this increase as a function of ambient temperature and the fiber cross-sectional area, d f 2 .

中文翻译：

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液滴支撑纤维对蒸发过程的影响分析

摘要 本文分析了液滴支撑纤维对液滴蒸发过程的影响。使用本研究的实验结果和文献中的实验结果，对在大气压下的热环境中蒸发的液滴进行了评估。使用与当前数据类似的测试条件和实验设置获得选定的已发布结果。这些研究之间唯一的主要区别是液滴支持纤维直径在 14 µm 和 225 µm 之间变化。这些研究中探索的环境温度范围从室温到 973 K。选择正庚烷是因为它是这些研究中最常用的燃料。主要发现是使用 14 µm 纤维直径的交叉纤维技术，不会引起明显的热量传递到液滴中，因此不会干扰蒸发过程。相比之下，经典的纤维技术使用相对较大的纤维，由于通过纤维的传导热传递增加，大大提高了液滴蒸发率。提出了一种相关性来量化作为环境温度和纤维横截面积 df 2 函数的这种增加的水平。