Experimental and numerical simulation of gasoline-air mixture explosion characteristics in semi-confined space

被引：0
|
作者：
Ou Y. [1 ]
Li R. [1 ]
Yuan G. [2 ]
Li G. [1 ]
Wang S. [1 ]
机构：
[1] Department of Oil, Army Logistics University of PLA, Chongqing
[2] No.72489 Troop of Army, Yantai, 265301, Shandong
来源：
Li, Run (827833976@qq.com) | 1600年 / Materials China卷 / 68期
基金：
中国国家自然科学基金;
关键词：
Experimental validation; Gasoline-air; Large eddy simulation; Mixtures; Obstacle; Semi-confined space; Turbulent flow;
D O I：
10.11949/j.issn.0438-1157.20170526
中图分类号：
学科分类号：
摘要：
The characteristics of oil and gas explosion in volumetric semi-confined space under the condition of barrier is studied. The characteristics of flame shape and explosion overpressure during the explosion process are experimented by high-speed photography and other techniques. The flame shape, the flow field structure and the overpressure characteristic when the flame interacts with the obstacle are simulated accurately, and the results are compared with the experiment. The results show that the presence of obstruction will change the flame structure, the hemispherical→conical→brush-like transition will occur, and the flame vortex will be generated in the downstream of the obstacle due to the unburned gas. As a result of the coupling between the combustion rate and the pressure relief rate, the presence of obstructions in the oil and gas explosion can lead to changes in the combustion rate and the pressure relief rate, which in turn have an effect on the overpressure peak. © All Right Reserved.
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页码：4437 / 4444
页数：7
相关论文
共 32 条
  • [1] Zhu Y., Qian X.M., Liu Z.Y., Et al., Analysis and assessment of the Qingdao crude oil vapor explosion accident: lessons learnt, Journal of Loss Prevention in the Process Industries, 33, pp. 289-303, (2015)
  • [2] Zhang P.L., Du Y., Qi S., Et al., Experiments of gasoline-air mixture explosion suppression by non-premixed nitrogen in a closed tunnel, Journal of Thermal Analysis and Calorimetry, 121, 2, pp. 885-893, (2015)
  • [3] Qi S., Du Y., Wang S.M., Et al., The effect of vent size and concentration in vented gasoline-air explosions, Journal of Loss Prevention in the Process Industries, 44, pp. 88-94, (2016)
  • [4] Du Y., Ou Y.H., Wu Y., Et al., The hot heat of oil and gas under hot wall conditions, Explosion and Shock Waves, 3, pp. 268-274, (2009)
  • [5] Wang S.M., Du Y., Li G.Q., Et al., Overvoltage transient and flame behavior of oil and gas deflagration in locally openly restricted space, CIESC Journal, 68, 8, pp. 3310-3318, (2017)
  • [6] Wu S.L., Du Y., Zhang P.L., Et al., Influence of ignition mode on oil and gas deflagration in restricted space, CIESC Journal, 67, 4, pp. 1626-1632, (2016)
  • [7] Wang S.M., Du Y., Li Y.C., Et al., External flame characteristics of gasoline-air mixture explosion in confined space with weakly constrained structure, Journal of Logistics Engineering University, 5, pp. 39-43, (2016)
  • [8] Du Y., Wang S.M., Qi S., Et al., Explosion characteristics of oil and gas in confined space with weakly constrained structures at the top, Explosion and Shock Waves, 1, pp. 53-60, (2017)
  • [9] Li G.Q., Du Y., Qi S., Et al., Explosions of gasoline-air mixtures in a closed pipe containing a T-shaped branch structure, Journal of Loss Prevention in the Process Industries, 43, pp. 529-536, (2016)
  • [10] Xu H., Tan Y.X., Meng L., Et al., Solid obstructions in long tube to the research on the effects of gas explosion properties, Journal of Safety Science and Technology, 9, pp. 17-21, (2012)
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