Effect of methane explosion on distribution of pressure field inside and outside buildings

LI Yuxing; YIN Yuanbo; WANG Yazhen; LIU Cuiwei

doi:10.11949/0438-1157.20200064

您当前的位置：

首页 >

文章列表页 >

Effect of methane explosion on distribution of pressure field inside and outside buildings

Process safety | 更新时间：2026-07-24

- Effect of methane explosion on distribution of pressure field inside and outside buildings
- CIESC Journal Vol. 71, Issue 11, Pages: 5337-5351(2020)
- 作者机构：
  
  1.中国石油大学（华东）山东省油气储运安全省级重点实验室，山东青岛 266580
  2.中国石化青岛安全工程研究院，山东青岛 266580
  3.中国石油大学（华东）储运与建筑工程学院，山东青岛 266580
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200064
  CLC： TH 88
- Received：16 January 2020，
  
  Revised：2020-06-16，
  
  Online First：03 November 2020，
  
  Published：05 November 2020
- 稿件说明：
移动端阅览
李玉星, 尹渊博, 王雅真, 刘翠伟. 甲烷爆炸对建筑物内外压力场分布的影响[J]. 化工学报, 2020, 71(11): 5337-5351

Li Yuxing, YIN Yuanbo, WANG Yazhen, LIU Cuiwei. Effect of methane explosion on distribution of pressure field inside and outside buildings[J]. CIESC Journal, 2020, 71(11): 5337-5351
李玉星, 尹渊博, 王雅真, 刘翠伟. 甲烷爆炸对建筑物内外压力场分布的影响[J]. 化工学报, 2020, 71(11): 5337-5351 DOI： 10.11949/0438-1157.20200064.

Li Yuxing, YIN Yuanbo, WANG Yazhen, LIU Cuiwei. Effect of methane explosion on distribution of pressure field inside and outside buildings[J]. CIESC Journal, 2020, 71(11): 5337-5351 DOI： 10.11949/0438-1157.20200064.

摘要

天然气泄漏导致的预混爆炸，会严重威胁周围人员的生命及财产安全，因此掌握气体预混爆炸在建筑物周围产生压力场的分布至关重要。基于Fluent软件，建立了适用于甲烷无约束爆炸超压的计算模型，并通过实验数据对其修正，结果表明：在化学计量浓度下参与燃烧爆炸的预混气体体积约为总体积的1/3，即当量体积。在此基础上建立了适用于甲烷约束爆炸的仿真模型，分析了建筑物高度和宽度对建筑周围压力场的影响，并进一步研究了气体爆炸对建筑物内部压力场分布的影响。结果表明，在建筑物不失效前提下，背对爆炸源一侧中上部为较安全区域，在紧急爆炸事故中，盲目的向下逃生，反而容易受到爆炸超压的强烈冲击。

Abstract

Premixed methane gas explosions caused by leaked natural gas pose a serious threat to the lives

which may lead to casualties and buildings collapse. So it is important to know the distribution of pressure fields around buildings when there is an explosion. Then people can escape to a relative safe place. Based on the Fluent software

a calculation model suitable for the overpressure of the unconstrained explosion of methane was established

and it was corrected by experimental data. The results show that highest accuracy appears in the SAS turbulence model and the Laminar Finite-Rate model when there is no object to limit the explosion

and that the volume of methane air mixture involved in combustion explosion at the stoichiometric concentration is about 1/3 of the total volume. Then a model for methane unconfined explosion is established. The influence of building height and width on the pressure field is analyzed. Furthermore

the distribution of pressure field inside the building is studied. And the results show that the middle-upper part of buildings is safer than the bottom when the building does not fail. The width of a building affects its resistance to positive overpressure. But neither the height nor the width of the building will affect the change of negative overpressure. Thus in the emergency explosion accidents

it will more vulnerable to the strong impact of positive and negative overpressure that escaping to the bottom blindly.

关键词

Keywords

references

Vanderstraeten B , Tuerlinckx D , Berghmans J , et al . Experimental study of the pressure and temperature dependence of the upper flammability limit of methane/air mixtures [J ] . Journal of Hazardous Materials , 1997 , 56 ( 3 ): 237 - 246 .

Bunev V A , Bolshova T A , Babkin V S . The nature of the upper laminar flammability limit in methane-air mixtures at high pressures [J ] . Doklady Physical Chemistry , 2013 , 452 ( 1 ): 197 - 199 .

Checkel M D , Ting S K , Bushe W K . Flammability limits and burning velocities of ammonia/nitric oxide mixtures [J ] . Journal of Loss Prevention in the Process Industries , 1995 , 8 ( 4 ): 215 - 220 .

Chen J R , Tsai H Y , Chien J H , et al . Flow and flame visualization near the upper flammability limits of methane/air and propane/air mixtures at elevated pressures [J ] . Journal of Loss Prevention in the Process Industries , 2011 , 24 ( 5 ): 662 - 670 .

Gieras M , Klemens R , Rarata G , et al . Determination of explosion parameters of methane-air mixtures in the chamber of 40 dm 3 at normal and elevated temperature [J ] . Journal of Loss Prevention in the Process Industries , 2006 , 19 ( 2/3 ): 263 - 270 .

Cui G , Wang S , Liu J G , et al . Explosion characteristics of a methane/air mixture at low initial temperatures [J ] . Fuel , 2018 , 234 ( 15 ): 886 - 893 .

Huang L B , Wang Y , Pei S F , et al . Effect of elevated pressure on the explosion and flammability limits of methane-air mixtures [J ] . Energy , 2019 , 186 ( 1 ): 115840 .

Zheng W , Kaplan C R , Houim R W , et al . Flame acceleration and transition to detonation: effects of a composition gradient in a mixture of methane and air [J ] . Proceedings of the Combustion Institute , 2018 , 37 ( 3 ): S1540748918305364 .

Guo Y B , He L G , Wang D G , et al . Numerical investigation of surface conduit parallel gas pipeline explosive based on the TNT equivalent weight method [J ] . Journal of Loss Prevention in the Process Industries , 2016 , 44 : 360 - 368 .

Fernando D A , Enrique G F , Juan F S P , et al . Characteristic overpressure–impulse–distance curves for vapour cloud explosions using the TNO multi-energy model [J ] . Journal of Hazardous Materials , 2006 , 137 ( 2 ): 734 - 741 .

Dobashi R , Kawamura S , Kuwana K , et al . Consequence analysis of blast wave from accidental gas explosions [J ] . Proc. of Combust. Inst. , 2011 , 33 ( 2 ): 2295 - 2301 .

Bao Q , Fang Q , Yang S , et al . Experimental investigation on the deflagration load under unconfined methane-air explosions [J ] . Fuel , 2016 , 185 : 565 - 576 .

Gostintsev Y A , Istratov A G , Shulenin Y V . Self-similar propagation of a free turbulent flame in mixed gas mixtures [J ] . Combustion Explosion & Shock Waves , 1988 , 24 ( 5 ): 563 - 569 .

Kim W K . Prediction model for self-similar propagation and blast wave generation of premixed flames [J ] . International Journal of Hydrogen Energy , 2015 , 40 ( 34 ): 11087 - 11092 .

Strehlow R A , Luckritz R T , Adamczyk A A , et al . The blast wave generated by spherical flames [J ] . Combustion & Flame , 1979 , 35 ( 79 ): 297 - 310 .

Li P L , Huang P , LIU Z Y , et al . Experimental study on vented explosion overpressure of methane/air mixtures in manhole [J ] . Journal of Hazardous Materials , 2019 , 374 ( 15 ): 349 - 355 .

Huang K , Sun Z Y , Tian Y C , et al . Turbulent combustion evolution of stoichiometric H 2 /CH 4 /air mixtures within a spherical space [J ] . International Journal of Hydrogen Energy , 2019 , 45 ( 27 ): 10613 - 10622 .

Ciccarelli G , Johansen C T , Parravani M . The role of shock-flame interactions on flame acceleration in an obstacle laden channel [J ] . Combustion & Flame , 2010 , 157 ( 11 ): 2125 - 2136 .

Harrison A J , Eyre J A . The effect of obstacle arrays on the combustion of large premixed gas/air clouds [J ] . Combustion Science and Technology , 1987 , 52 ( 1/2/3 ): 121 - 137 .

Wang C , Huang F , Addai E K , et al . Effect of concentration and obstacles on flame velocity and overpressure of methane-air mixture [J ] . Journal of Loss Prevention in the Process Industries , 2016 , 43 : 302 - 310 .

Hall R , Masri A R , Yaroshchyk P , et al . Effects of position and frequency of obstacles on turbulent premixed propagating flames [J ] . Combustion and Flame , 2009 , 156 ( 2 ): 439 - 446 .

Kundu S , Zanganeh J , Moghtaderi B . A review on understanding explosions from methane-air mixture [J ] . Journal of Loss Prevention in the Process Industries , 2016 , 40 : 507 - 523 .

Ibrahim S S , Masri A R . The effects of obstructions on overpressure resulting from premixed flame deflagration [J ] . 2001 , 14 ( 3 ): 213 - 221 .

Xu H , Li Y , Zhu P , et al . Experimental study on the mitigation via an ultra-fine water mist of methane/coal dust mixture explosions in the presence of obstacles [J ] . Journal of Loss Prevention in the Process Industries , 2013 , 26 ( 4 ): 815 - 820 .

Yu D M , Feng C G , Zeng Q X , et al . The damage of explosions and the division of their injury regions [J ] . China Safety Science Journal , 1995 ( S2 ): 13 - 17 .

李少鹏 , 陈国华 , 赵杰 , 等 . 开敞空间可燃气云爆炸冲击波超压及灾害动力响应研究评述 [J ] . 中国安全生产科学技术 , 2019 , 15 ( 11 ): 11 - 17 .

Li S P , Chen G H , Zhao J , et al . Research review on explosion shock wave overpressure and disaster dynamic response of open space combustible gas cloud [J ] . Journal of Safety Science and Technology , 2019 , 15 ( 11 ): 11 - 17 .

张斌 . 大涡模拟滤波网格分析及网格自适应控制研究与应用 [D ] . 上海 : 上海交通大学 , 2011 .

Zhang B . Grid analysis of large eddy simulation filter and research and application of grid adaptive control [D ] . Shanghai : Shanghai Jiao Tong University , 2011 .

Ales T , Miroslav M , Kozubková M . CFD simulation of vented explosion and turbulent flame propagation [J ] . EPJ Web of Conferences , 2015 , 92 : 02101 .

Kim W K , Mogi T , Kuwana K , et al . Prediction model for self-similar propagation and blast wave generation of premixed flames [J ] . International Journal of Hydrogen Energy , 2015 , 40 ( 34 ): 11087 - 11092 .

Kim W K , Mogi T , Kuwana K , et al . Self-similar propagation of expanding spherical flames in large scale gas explosions [J ] . Proceedings of the Combustion Institute , 2015 , 35 ( 2 ): 2051 - 2058 .

Malhotra A , Carson D , Mcfadden S . Blast pressure leakage into buildings and effects on humans [J ] . Procedia Engineering , 2017 , 210 : 386 - 392 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical calculation of CO2 pipeline fracture propagation based on crack tip decompression characteristics

Local deposition characteristics of CaCO3 fouling under different roughness element structures

Research progress on explosion dynamic characteristics and mechanism of hybrid mixtures

Study on coupling operation characteristics of Stirling engine and high temperature heat pipe

Numerical simulation analysis of vertical jet fire impinging on the pipeline

Related Author

WANG Yifei

LI Yuxing

OUYANG Xin

ZHAO Xuefeng

MENG Lan

HU Qihui

YIN Buze

GUO Yaqi

Related Institution

Shandong Provincial Key Laboratory of Oil, Gas and New Energy Storage and Transportation Safety

PipeChina Research Institute of Science and Technology

State Key Laboratory of Continental Shale Oil, Daqing Oilfield Co., Ltd.

School of Energy and Power Engineering, Northeast Electric Power University

School of Safety Science and Engineering, Xi’an University of Science and Technology

⁰