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Chinese Journal of High Pressure Physics  > 2014  >  28(1): 55-60.
PANG Lei, GAO Jian-Cun, LI Lei, MA Qiu-Ju, KANG Yong, MENG Qian-Qian. Influence of Gas Concentration on Flame Spread Range Generated from Indoor Deflagration of Natural Gas[J]. Chinese Journal of High Pressure Physics, 2014, 28(1): 55-60. doi: 10.11858/gywlxb.2014.01.009
Citation: PANG Lei, GAO Jian-Cun, LI Lei, MA Qiu-Ju, KANG Yong, MENG Qian-Qian. Influence of Gas Concentration on Flame Spread Range Generated from Indoor Deflagration of Natural Gas[J]. Chinese Journal of High Pressure Physics, 2014, 28(1): 55-60. doi: 10.11858/gywlxb.2014.01.009
shu

Influence of Gas Concentration on Flame Spread Range Generated from Indoor Deflagration of Natural Gas

doi: 10.11858/gywlxb.2014.01.009
  • 1.

    Chemical Engineering College, Beijing Institute of Petrochemical Technology, Beijing 102617, China

  • 2.

    Beijing Municipal Institute of Labor Protection, Beijing 100054, China

  • 3.

    State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 28 Jul 2012
  • Rev Recd Date: 05 Oct 2012
    Abstract
  • Flame front with high temperature is one of the most main hazardous factors during indoor deflagration accidents of natural gas.Spread range of flame front reflects the hazardous region and the severity of this kind of accidents in a great degree.Combined with one indoor natural gas deflagration accident, the indoor natural gas deflagration processes under different gas concentrations, especially the spread range of flame, were studied deeply by virtue of computational fluid dynamics technology.The results show that gas concentration takes great influence on spread range of flame.The higher the gas concentration, the greater the spread range of flame.The reason of the above conclusions is that the movement and diffusion of unburned fuel induced by precursor shockwave and turbulence promote further spread of flame and enlargement of flame region.

     

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