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[1]周宁,倪鹏飞,李雪,等.管道结构对氢/空预混气体爆炸特性影响研究*[J].中国安全生产科学技术,2021,17(4):65-71.[doi:10.11731/j.issn.1673-193x.2021.04.011]
　ZHOU Ning,NI Pengfei,LI Xue,et al.Study on influence of pipe structure on explosion characteristics of hydrogenair premixed gas[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(4):65-71.[doi:10.11731/j.issn.1673-193x.2021.04.011]
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管道结构对氢/空预混气体爆炸特性影响研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年4期
页码:
65-71
栏目:
职业安全卫生管理与技术
出版日期:
2021-04-30

文章信息/Info

Title:
Study on influence of pipe structure on explosion characteristics of hydrogenair premixed gas
文章编号:
1673-193X(2021)-04-0065-07
作者:
周宁; 倪鹏飞; 李雪; 李徐伟; 袁雄军; 赵会军
(常州大学 江苏省油气储运技术重点实验室,江苏 常州 213164)
Author(s):
ZHOU Ning;  NI Pengfei;  LI Xue;  LI Xuwei;  YUAN Xiongjun;  ZHAO Huijun
(Jiangsu Key Laboratory of Oil & Gas Storage and Transportation Technology,Changzhou University,Changzhou Jiangsu 213164,China)
关键词:
氢-空预混气体; 直管; 90°弯管; T分岔管; 火焰结构
Keywords:
hydrogen-air premixed gas;  straight pipe;  90° elbow pipe;  T-shaped bifurcation pipe;  flame structure
分类号:
X932；TE973
DOI:
10.11731/j.issn.1673-193x.2021.04.011
文献标志码:
A
摘要:
为研究管道结构对氢-空预混气体爆炸特性影响，采用实验与数值模拟相结合的方法，分析不同管道结构内氢-空预混气体燃爆时火焰传播进程、爆炸压力、湍流动能变化及流场分布。结果表明：90°弯管对氢-空预混气体爆炸强度增强作用明显高于T型分岔管和直管。火焰阵面在结构突变处褶皱变形较明显，并出现大尺度强湍流和涡团，气团脉动速度与湍流燃烧速率不断增大，氢-空预混气体质量扩散速率与热量扩散速率增大，湍流动能呈迅速上升趋势。
Abstract:
In order to reveal the flame propagation process,change of explosion pressure,change of turbulent kinetic energy and the distribution of flow field during the explosion of hydrogen-air premixed gas in the pipes with different structures,the explosion processes of hydrogen-air premixed gas in the closed straight pipe,90° elbow pipe and T-shaped bifurcation pipe were studied by means of experiment and numerical simulation.The results showed that the enhancement effect of 90° elbow pipe on the explosion intensity of hydrogen-air premixed gas was obviously stronger than that of T-shaped bifurcation pipe and straight pipe.The flame front presented the obvious fold deformation at the location with the sudden change of pipe structure,and the large-scale strong turbulence and vortex mass appeared.The pulsation velocity of air mass and the turbulent combustion rate increased continuously,then the mass diffusion rate and heat diffusion rate of hydrogen-air premixed gas increased,and the turbulent kinetic energy showed a rapid rise trend.

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备注/Memo

备注/Memo:
收稿日期： 2020-08-24
* 基金项目： 国家重点研发计划项目（2017YFC0805100）；江苏省高校自然科学研究重大项目（17KJA440001）；中国安全生产科学研究院基本科研业务费专项资金项目（2019JBKY08）
作者简介： 周宁，博士，教授，主要研究方向为爆炸与冲击力学、油气爆炸安全、油气储运工程。
更新日期/Last Update: 2021-05-09