Experimental investigation on the sputtering and micro-explosion of emulsion fuel droplets during impact on a heated surface
Experimental investigation on the sputtering and micro-explosion of emulsion fuel droplets during impact on a heated surface
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乳化燃料液滴撞击加热表面时溅射和微爆炸的实验研究
DOI：
10.1016/j.ijheatmasstransfer.2018.12.007
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发表时间：
2019-04
影响因子：
5.2
通讯作者：
Liu Fushui
中科院分区：
文献类型：
--
作者：
Cen Chunze;Wu Han;Lee Chia-fon;Fan Longjie;Liu Fushui
微爆由于其对燃料雾化和燃烧的潜在影响而受到人们的关注。利用高速摄像机同步背光技术，研究了不同含水量（5%~ 20%，间隔2.5%）和不同表面温度条件下，水-柴油乳化液液滴撞击加热表面所引起的溅射和微爆炸特性。结果发现，二次液滴仍然被环境加热以诱导溅射。观察到由溅射诱导的二次液滴将触发进一步的溅射。较高的水含量和较高的温度是诱发溅射和微爆炸所必需的。研究了100 °C ~ 320 °C范围内乳化燃料液滴撞击表面的变化规律。当温度高于300 °C时，观察到典型的莱顿弗罗斯特现象。当表面温度低于该范围时，根据具体的温度值，会产生各种类型的气泡，而纯柴油液滴不会产生气泡。
Micro-explosion has been concerned for decades due to its potential effect on fuel atomization and combustion. In this work, the characteristics of sputtering and micro-explosion induced by water-diesel emulsion fuel droplets impact on a heated surface under different water content (from 5% to 20% with an interval of 2.5%) and surface temperature conditions was investigated by a high speed camera synchronized with backlit technique. It was found that the secondary droplets was still heated by the environment to induce sputtering. It was observed the secondary droplets induced by sputtering would trigger further sputtering. Higher water content and higher temperature are necessary to induce sputtering and micro-explosion. The variation of an emulsion fuel droplet impacts on the surface from 100 °C to 320 °C was investigated. Typical Leidenfrost phenomenon was observed when the temperature was above the range when temperature was more than 300 °C. Various types of bubbles depending on the specific temperature value will generate when the surface temperature is below the range, while no bubble generates for neat diesel droplet.
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影响因子：
5.3
作者：
Mohammed Yahaya Khan;Z. A. A. Karim-Z.-A.-A.-Karim-31885959;A. Aziz;I. Tan
通讯作者：
Mohammed Yahaya Khan;Z. A. A. Karim-Z.-A.-A.-Karim-31885959;A. Aziz;I. Tan
影响因子：
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作者：
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影响因子：
9
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通讯作者：
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DOI：
10.1016/j.proci.2016.06.191
发表时间：
2017
期刊：
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影响因子：
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作者：
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液滴撞击不同粗糙度固体表面的动力学
DOI：
10.1016/j.ijmultiphaseflow.2017.07.002
发表时间：
2017-11-01
影响因子：
3.8
作者：
Tang, Chenglong;Qin, Mengxiao;Huang, Zuohua
通讯作者：
Huang, Zuohua