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Volume 29 Issue 3
Jul 2015
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Chinese Journal of High Pressure Physics  > 2015  >  29(3): 213-218.
LUO Lin, XIE Li-Feng, HAN Zhi-Wei, HUANG Yong. Cloud Character in Explosion Dispersion and Combustion Feature of Diesel[J]. Chinese Journal of High Pressure Physics, 2015, 29(3): 213-218. doi: 10.11858/gywlxb.2015.03.008
Citation: LUO Lin, XIE Li-Feng, HAN Zhi-Wei, HUANG Yong. Cloud Character in Explosion Dispersion and Combustion Feature of Diesel[J]. Chinese Journal of High Pressure Physics, 2015, 29(3): 213-218. doi: 10.11858/gywlxb.2015.03.008
shu

Cloud Character in Explosion Dispersion and Combustion Feature of Diesel

doi: 10.11858/gywlxb.2015.03.008

  • Institute of Chemical Industry, Nanjing University of Science and Technology, Nanjing 210094, China

  • Received Date: 29 May 2014
  • Rev Recd Date: 29 Jul 2014
    Abstract
  • In this study, the dispersion, cloud forming process and combustion explosion properties of diesel, combustion retardant diesel and explosion suppression diesel were investigated.A high-speed video camera system was employed to record the process of cloud forming, and an infrared thermal imaging system to record the fireball evolution process.The results show that under the driving force of shock wave from the center initiation explosive, the diesel droplets mix with air rapidly to form cloud.The size of cloud decreases as the kinematic viscosity of diesel increases.Afterwards, fireball appears after the secondary initiation.The highest fireball temperature of combustion retardant diesel decreases 35% compared with diesel, and that of explosion suppression diesel decreases 23% compared with combustion retardant diesel.The maximum fireball diameter and height of combustion retardant diesel reduce 54% and 42% respectively compared with diesel, and those of explosion suppression diesel reduce 46% and 55% respectively compared with combustion retardant diesel.The fireball duration of combustion retardant diesel shortens 38% compared with diesel and that of explosion suppression diesel shortens 47% compared with combustion retardant diesel.Therefore, explosion suppression diesel is better than combustion retardant diesel and combustion retardant diesel is better than diesel in preventing temperature and size growth of fireballs.

     

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