کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6468335 | 1423564 | 2016 | 8 صفحه PDF | دانلود رایگان |
The effects of various ambient pressure and temperature conditions on the ignition characteristics of kerosene-based nanofluid droplets were investigated experimentally. Individual kerosene droplet containing 0.1 or 1% by mass was mounted on the tip of silicon carbide (SiC) fiber and exposed to ambient temperatures in the range of 400-700 °C and ambient pressures in the range of 0.1-2.5 MPa under normal gravity. An increase in ambient pressure was observed to reduce the ignition location distance below a droplet. The ignition delay times of pure kerosene droplets were also examined for comparison. The results showed that the ignition delay time of Al NPs-laden kerosene droplets decreased exponentially with increasing temperature, as did that of pure kerosene droplets. An ambient pressure increase from 0.1 to 2.5 MPa led to a decrease in the lowest ambient temperature for ignition from 800 to 400 °C. At pressures greater than 1 MPa, the ignition delay times of droplets with 1% Al were shorter than those of pure kerosene and kerosene with 0.1% Al. Furthermore, as the ambient pressure increased from 0.1 to 2.5 MPa, the ignition delay was found to decrease and then increase exceeding the limiting pressure.
Journal: Combustion and Flame - Volume 173, November 2016, Pages 106-113