Effect of ignition position on overpressure in vented explosion of methane-air mixtures

WANG Chaoqiang; YANG Shigang; FANG Qin; BAO Qi

doi:10.11883/bzycj-2016-0344

Volume 38 Issue 4

May 2018

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WANG Chaoqiang, YANG Shigang, FANG Qin, BAO Qi. Effect of ignition position on overpressure in vented explosion of methane-air mixtures[J]. Explosion And Shock Waves, 2018, 38(4): 898-904. doi: 10.11883/bzycj-2016-0344

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Effect of ignition position on overpressure in vented explosion of methane-air mixtures

doi: 10.11883/bzycj-2016-0344

1.
State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China
2.
Unit 91058 of PLA, Sanya 572000, Hainan, China

Received Date: 2016-11-10
Rev Recd Date: 2017-02-17
Publish Date: 2018-07-25

Abstract

Abstract

Vented explosion tests were carried out in a 12 m³ concrete chamber filled with premixed methane-air mixture with the methane volume fraction of 9.5%, and the influence of the ignition position on the development of overpressure and the evolution of flame was investigated. The results show that this influence on the rising rate of Δp₁ was nearly negligible but the peak value of Δp₂ increased with the increase of the distance between the ignition position and the vent, and the peak value of Δp₄ was correlated with different ignition positions, i.e. central ignition, rear ignition, front ignition, in an order of descending influence. Moreover, when the venting pressure got bigger, Δp₁ had the same increment at all the ignition positions, whereas Δp₂ vanished in front and central ignitions, and Δp₄ increased with the increase of venting pressure only in center ignition. Besides, the evolution of the external frame was observed to fall into two stages: the fireball formation and the jet frame. The size of the fireball and the maximum length of the external jet flame in rear and central ignitions were larger than those in front ignition.
- methane-air mixtures,
- vent explosion,
- peak overpressure,
- ignition position

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References(11)

References

[1]	VYAZMINA E, JALLAIS S. Validation and recommendations for FLACS CFD and engineering approaches to model hydrogen vented explosions: effects of concentration, obstruction vent area and ignition position[J]. International Journal of Hydrogen Energy, 2016, 41(33):15101-15109. doi: 10.1016/j.ijhydene.2016.05.189
[2]	BAO Q, FANG Q, ZHANG Y, et al. Effects of gas concentration and venting pressure on overpressure transients during vented explosion of methane-air mixtures[J]. Fuel, 2016, 175:40-48. doi: 10.1016/j.fuel.2016.01.084
[3]	郑立刚, 吕先舒, 郑凯, 等.点火源位置对甲烷-空气爆燃超压特征的影响[J].化工学报, 2015(7):2749-2756. https://www.researchgate.net/profile/Ligang_Zheng3/publication/282680943_Influence_of_ignition_position_on_overpressure_of_premixed_methane-air_deflagration/links/56936d5808aed0aed8178954.pdf?origin=publication_list ZHENG Ligang, LÜ Xianshu, ZHENG Kai, et al. Influence of ignition position on overpressure of premixed methane-air deflagration[J]. Journal of Chemical Industry and Engineering, 2015(7):2749-2756. https://www.researchgate.net/profile/Ligang_Zheng3/publication/282680943_Influence_of_ignition_position_on_overpressure_of_premixed_methane-air_deflagration/links/56936d5808aed0aed8178954.pdf?origin=publication_list
[4]	曹勇. 点火位置对氢气-空气泄爆特性影响的实验研究[D]. 安徽淮南: 安徽理工大学, 2016. http://www.wanfangdata.com.cn/details/detail.do?_type=degree&id=Y3010585
[5]	SOLBERG D M, PAPPAS J A, SKRAMSTAD E. Observations of flame instabilities in large scale vented gas explosions[J]. Symposium on Combustion, 1981, 18(1):1607-1614. doi: 10.1016/S0082-0784(81)80164-6
[6]	BRADLEY D, MITCHESON A. The venting of gaseous explosions in spherical vessels: Ⅰ: theory[J]. Combustion and Flame, 1978, 32(78):237-255.
[7]	KASMANI R M, ANDREWS G E, PHYLAKTOU H N. Experimental study on vented gas explosion in a cylindrical vessel with a vent duct[J]. Process Safety and Environmental Protection, 2013, 91(4):245-252. doi: 10.1016/j.psep.2012.05.006
[8]	HARRISON A J, EYRE J A. External explosions as a result of explosion venting[J]. Combustion Science and Technology, 1987, 52(1/2/3):91-106. https://www.researchgate.net/publication/277541612_External_Explosions_as_a_Result_of_Explosion_Venting
[9]	BAUWENS C R, CHAFFEE J, DOROFEEV S. Effect of ignition location, vent size, and obstacles on vented explosion overpressures in propane-air mixtures[J]. Combustion Science and Technology, 2010, 182(11/12):1915-1932. doi: 10.1080/00102202.2010.497415?needAccess=true
[10]	COOPER M G, FAIRWEATHER M, TITE J P. On the mechanisms of pressure generation in vented explosions[J]. Combustion and Flame, 1986, 65(1):1-14. http://www.sciencedirect.com/science/article/pii/0010218086900672
[11]	ROCOURT X, AWAMAT S, SOCHET I, et al. Vented hydrogen-air deflagration in a small enclosed volume[J]. International Journal of Hydrogen Energy, 2014, 39(35):20462-20466. doi: 10.1016/j.ijhydene.2014.03.233

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