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[1]时静洁,赵薇,陈小林,等.泄爆口参数对氢气火焰传播过程影响的数值模拟*[J].中国安全生产科学技术,2022,18(7):178-186.[doi:10.11731/j.issn.1673-193x.2022.07.026]
　SHI Jingjie,ZHAO Wei,CHEN Xiaolin,et al.Numerical simulation on influence of explosion vent parameters on flame propagation process of hydrogen[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(7):178-186.[doi:10.11731/j.issn.1673-193x.2022.07.026]
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泄爆口参数对氢气火焰传播过程影响的数值模拟*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年7期
页码:
178-186
栏目:
职业安全卫生管理与技术
出版日期:
2022-07-31

文章信息/Info

Title:
Numerical simulation on influence of explosion vent parameters on flame propagation process of hydrogen
文章编号:
1673-193X(2022)-07-0178-09
作者:
时静洁; 赵薇; 陈小林; 袁雄军; 陈常豪
（1.常州大学 环境与安全工程学院，江苏 常州 213164；
2.天地（常州）自动化股份有限公司，江苏 常州 213015）
Author(s):
SHI Jingjie;  ZHAO Wei;  CHEN Xiaolin;  YUAN Xiongjun;  CHEN Changhao
(1.School of Environmental & Safety Engineering ,Changzhou University,Changzhou Jiangsu 213164,China;
2.Tiandi (Changzhou) Automation Co.,Ltd.,Changzhou Jiangsu 213015,China)
关键词:
氢气爆炸; 泄爆口参数; 火焰结构; 爆炸超压; 流场特性
Keywords:
hydrogen explosion;  explosion vent parameter;  flame structure;  explosion overpressure;  flow field characteristic
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2022.07.026
文献标志码:
A
摘要:
为了减少管内气体爆炸造成的损失与破坏，基于大涡模拟LES模型和Zimont燃烧模型，研究泄爆尺寸(直径为40，60，80 mm)和泄爆位置(侧方距点火端1，3，5 m)等泄爆条件对受限空间中氢气燃爆特性的影响。研究结果表明：大孔径泄爆口更好的排放效果造成火焰锋面在通过泄爆口时发生严重畸变，而泄爆口与点火端距离的增加则会削弱火焰锋面畸变的程度，且不同尺寸泄爆口产生的泄压效果差异较大。因此，应考虑将合适尺寸的泄爆口设置于靠近易燃点处。通过探索不同泄爆孔径与泄爆口位置对氢气火焰传播的影响规律，可为实际应用中的安全泄爆起到指导性作用。
Abstract:
In order to reduce the damage caused by the gas explosion in the duct,the influence of explosion venting conditions including the explosion venting sizes (diameter of 40,60 and 80 mm) and the explosion venting positions (lateral distance of 1,3 and 5 m from the ignition end) on the combustion and explosion characteristics of hydrogen in the confined space was studied by using the large eddy simulation (LES) model and Zimont combustion model.The results showed that the better discharge effect of explosion vent with large diameter caused serious distortion of flame front when passing through the explosion vent,while the increase in the distance between explosion vent and ignition end would weaken the distortion degree of flame front,and the pressure relief effect generated by different sizes of explosion vent was quite different.Therefore,it should be considered to set the explosion vent with appropriate size near the flammable point.By exploring the influence of different explosion venting diameters and explosion vent positions on hydrogen flame propagation,the direction for safe explosion venting in practical application was pointed out.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期： 2021-08-22
*基金项目： 国家重点研发计划项目(2017YFC085100)；第十六批“六大人才高峰”创新人才团队项目(TD-JNHB-013)；江苏省高校自然科学研究重大项目(17KJA440001)；江苏省高等学校自然科学研究项目(19KJB620002)；常州市科技支撑计划（社会发展）项目(CE20205019)
作者简介： 时静洁，博士，讲师，主要研究方向为化工工艺热安全分析。
通信作者： 袁雄军，硕士，副教授，主要研究方向为安全生产信息化。
更新日期/Last Update: 2022-08-10