泄爆门泄爆特性试验及数值模拟研究

doi:10.16265/j.cnki.issn1003-3033.2020.08.008

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (8): 51-56.doi: 10.16265/j.cnki.issn1003-3033.2020.08.008

泄爆门泄爆特性试验及数值模拟研究

李昂^1,2 讲师, 司俊鸿^1,2 副教授, 李雪冰^1,2 讲师

1 华北科技学院应急技术与管理学院,北京 101601;
2 河北省矿井灾害防治重点实验室, 河北廊坊 065201

收稿日期:2020-05-06 修回日期:2020-07-06 出版日期:2020-08-28 发布日期:2021-07-15
作者简介:李昂 (1989—),男,满族,辽宁阜新人,博士,讲师,主要从事矿井瓦斯灾害防治研究。E-mail: thankliang@163.com。
基金资助:
国家自然科学基金资助(51804120,51804117);中央高校基本科研业务费资助(3142019006,3142018028);廊坊市科技计划项目(2020013031)。

Experiment and numerical simulation for venting characteristics of explosion venting door

LI Ang^1,2, SI Junhong¹, LI Xuebing¹

1 School of Emergenay Technology and Management, North China Institute of Science and Technology, Beijing 101601, China;
2 Hebei Provincial Key Lab of Mine Disaster Prevention and Control, Langfang Hebei 065201, China

Received:2020-05-06 Revised:2020-07-06 Online:2020-08-28 Published:2021-07-15

摘要/Abstract

摘要： 为研究数值模拟边界条件的准确性及泄爆门对瓦斯爆炸的抑制作用,自制大直径爆炸管道试验装置,在瓦斯体积分数9.5%条件下进行瓦斯爆炸试验,同时运用FLUENT软件模拟整个爆炸传播过程,通过对比分析试验数据与模拟结果,分析其变化特征和泄爆效果。结果表明:爆炸冲击波从测点2传播到测点3时,试验和数值模拟方式下压力峰值衰减率分别为51.40%和51.28%,偏差率为0.23%,泄爆门能显著衰减爆炸压力;2种研究方式下温度变化规律相同,测点2、3温度峰值偏差分别为6.99%和6.43%,但泄爆门对火焰温度没有抑制作用;通过对比研究发现,两者得出的结论和变化规律吻合,证实了数值模拟的数学模型、边界条件和初始条件的准确性。

关键词: 泄爆门, 瓦斯爆炸, 大尺寸管道, 爆炸压力, 数值模拟

Abstract: In order to study accuracy of numerical simulation boundary conditions and explosion venting doors' inhibitory effect on gas explosion, tests were carried out at a gas concentration of 9.5% by using independently developed large-diameter explosion pipeline device. Then, explosion propagation process was simulated with FLUENT software, and experimental data and simulation results were compared to analyze change characteristics and flameproof effect. The results show that when explosion shock wave propagates from measuring point 2 to point 3, pressure peak decay rates of test and numerical simulation are 51.40% and 51.28% respectively with a deviation rate of 0.23%, which shows that venting door can significantly attenuate explosion pressure. Temperature changes in the same law for both methods, and peak value deviations of measuring points 2 and 3 are 6.99% and 6.43%, but explosion venting door does not control flame temperature. Through comparative study, it is found that conclusions and change laws of two methods are consistent, which confirms accuracy of mathematical model, boundary conditions and initial conditions of numerical simulation.

Key words: explosion venting door, gas explosion, large-size pipeline, explosion pressure, numerical simulation

中图分类号:

X932

李昂, 司俊鸿, 李雪冰. 泄爆门泄爆特性试验及数值模拟研究[J]. 中国安全科学学报, 2020, 30(8): 51-56.

LI Ang, SI Junhong, LI Xuebing. Experiment and numerical simulation for venting characteristics of explosion venting door[J]. China Safety Science Journal, 2020, 30(8): 51-56.

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泄爆门泄爆特性试验及数值模拟研究

Experiment and numerical simulation for venting characteristics of explosion venting door

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