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On the Evaporation and Ignition of Kerosene Fuel Droplet
Qasim Sarwar Khan(카심 살월 칸),Seung Wook Baek(백승욱),Hojat Ghassemi(호잿 가세미) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
In the present study, the evaporation rates and ignition delay times of kerosene were investigated at high temperatures (between 800 and 1100 K) and high pressures (between 0.1 and 2.0 ㎫) under normal gravity. Droplet with an initial diameter of 1.0 to 1.4 ㎜ hanging at the tip of quartz fiber was subjected under high ambient conditions suddenly. The vaporizing/burning process was recorded through a CCD camera and evaporation history is thus evaluated through temporal variation of droplet diameter. The results show a reduction in ignition delay times upon increment of temperature and pressure. The evaporation follows d²-law and vaporization rates increases at high ambient temperature and pressure. The ignition delay time can be represented by the expression τ=AP<SUP>B</SUP>exp(D/T).