Study on turbulence factors of flame propagation in tube under gas explosion

被引：0
|
作者：
Sun S. [1 ]
Gao K.-H. [1 ]
机构：
[1] State Key Laboratory of Disaster Prevention and Mitigation of Explosive and Impact, PLA University of Science and Technology, Nanjing
来源：
Meitan Xuebao/Journal of the China Coal Society | 2016年 / 41卷
关键词：
Deflagration; Flame velocity; Simplified method; Turbulence factor;
D O I：
10.13225/j.cnki.jccs.2016.0102
中图分类号：
学科分类号：
摘要：
The velocity of flame propagation has a great influence on the peak pressure caused by gas explosion. The influence of self-development, tube and obstacle on flame velocity were considered on the basis of existing data. In analyzing the acceleration mechanism of flame propagation in tubes, turbulence factors were introduced to measure the turbulence effect of deflagration flame propagation and a simplified calculation method on the maximum velocity of flame propagation was obtained. Compared with test data, the simplified method agrees well with the experimental results within the scope of application, and the accuracy of turbulence factors were proved in calculation. The determination of turbulence factors makes the measurement of flame maximum velocity more convenient. © 2016, Editorial Office of Journal of China Coal Society. All right reserved.
引用
收藏
页码：441 / 447
页数：6
相关论文
共 31 条
  • [21] Liu Y., Ding Y., Effect of different blockage ratios of solid structure obstacles on flames transmission, Hunan Nonferrous Metals, 24, 1, pp. 1-4, (2008)
  • [22] Wang C., Ma T., Lu J., Influence of obstacle disturbance in a duct on explosion characteristics of coal gas, Sci. China Ser G, 39, 9, pp. 1248-1257, (2009)
  • [23] Wu H., Yan S., Zhang L., Obstacles affection to firedamp flame propagation process, Coal Mine Blasting, 72, 1, pp. 1-3, (2006)
  • [24] Luo W., Wu H., Wang X., Et al., Experimental study on the flame propagation speed and overpressure under obstacles, Initiatorsand Pyrotechnics, 3, pp. 40-43, (2008)
  • [25] Lu J., Ning J., Wang C., Et al., Study on flame propagation and acceleration mechanism of city coal gas, Explosion and Shock Waves, 24, 4, pp. 305-311, (2004)
  • [26] Zhou K., Li Z., Flame front acceleration of propane-air deflagration in straight tubes, Explosion and Shock Waves, 20, 2, pp. 138-142, (2000)
  • [27] Zhao H., Principle of Gas and Dust Explosions, (1992)
  • [28] Wu H., Lu S., Zhang L., Experimental study on the obstacles affection to fire damp flame propagation process, Mining Safety & Environmental Protection, 31, 3, pp. 6-8, (2004)
  • [29] Lin Z., Li R., Liu E., Et al., Study on effect of obstacles to shock wave of gas explosion, Journal of Safety Science and Technology, 11, 2, pp. 28-32, (2014)
  • [30] Xie B., Fan B., Wang K., Et al., Experimental study of flame acceleration and overpressure induced by baffle-obstacle, Journal of China Coal Society, 27, 6, pp. 627-631, (2002)
1234