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Temporal and Spatial Characteristics of Gelled Kerosene Droplet Breakup
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(School of Mechanical Engineering, NUST, Nanjing 210094, China)

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    Abstract:

    In order to investigate the temporal and spatial distribution characteristics of gelled kerosene, a high speed camera was used to shoot the breakup process. The breakup characteristics of gelled kerosene at various gas velocities, the effects of flow parameters on breakup time and breakup region were obtained. Results indicate that the same breakup morphology as kerosene (Newtonian fluid) droplet occurs to gelled kerosene droplet with the increase of Weber number (We) and the transition We elevates with the increase of gellant content. For each kind of gelled kerosene, the ratio of total breakup time and initial breakup time (Ttot/Tini) decreases with the increase of Ohnesorge number (Oh) and tends towards the value of Newtonian fluid (3.125). At the end of breakup, streamwise breakup region widens with the increase of We and the region is wider with the lower gellant content. Cross-stream breakup region widens to a maximum value with the increase of We number. The ratio of cross-stream breakup region and initial diameter tends towards 20 for the gelled kerosene of 1% and 2% gellant content, while the value tends to 17 when gellant content is 3%.

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曹钦柳,封锋,邓寒玉.煤油凝胶液滴破碎时空特性实验研究[J].含能材料,2017,25(4):342-347.
CAO Qin-liu, FENG Feng, DENG Han-yu. Temporal and Spatial Characteristics of Gelled Kerosene Droplet Breakup[J]. Chinese Journal of Energetic Materials,2017,25(4):342-347.

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History
  • Received:November 07,2016
  • Revised:January 12,2017
  • Adopted:January 19,2017
  • Online: April 26,2017
  • Published: April 27,2017