Puffing and Microexplosion Behavior of Water in Pure Diesel Emulsion Droplets During Leidenfrost Effect
Puffing and Microexplosion Behavior of Water in Pure Diesel Emulsion Droplets During Leidenfrost Effect
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DOI：
10.1080/00102202.2016.1275593
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发表时间：
2017-03
影响因子：
1.9
通讯作者：
Mohammed Yahaya Khan;Z. A. Abdul Karim;A. Aziz;M. Heikal;C. Crua
中科院分区：
文献类型：
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作者：
Mohammed Yahaya Khan;Z. A. Abdul Karim;A. Aziz;M. Heikal;C. Crua
摘要 研究了莱顿弗罗斯特效应下纯柴油乳液中单水滴的微爆炸演化现象。测试的乳液使用具有 9%、12% 和 15% 三种不同含水量的商业表面活性剂混合物进行稳定。使用与背光技术同步的高速摄像机来捕捉微爆炸和膨胀的演变。分析了大约 2.6 毫米、2 毫米和 0.2 毫米的三种不同的液滴直径。研究发现，微爆炸的趋势和抽吸频率受液滴直径的影响。聚结是在较大液滴中引发微爆炸的主要因素。据观察，从母液滴喷出的子液滴经历了进一步的膨化过程。还发现微爆炸后的二次液滴的尺寸受母液滴尺寸的影响较小。比较了不同液滴尺寸下微爆炸和膨化的等待时间。
ABSTRACT The microexplosion evolution phenomenon of single droplets of water in pure diesel emulsion under Leidenfrost effect has been studied. The tested emulsions were stabilized with a blend of commercial surfactants with three different water contents of 9%, 12%, and 15%. A high speed camera synchronized with backlight technique was used to capture the evolution of microexplosion and puffing. Three different droplet diameters of approximately 2.6 mm, 2 mm, and 0.2 mm were analyzed. It was found that the tendency of microexplosion and puffing frequency was influenced by the droplet diameter. Coalescence was the dominating factor in inducing microexplosion in bigger droplets. It was observed that the child droplets ejected from the parent droplet undergoes further puffing processes. The size of the secondary droplets after microexplosion were also found to be slightly influenced by the parent droplet size.The waiting time for microexplosion and puffing were compared for different droplets size.