|本期目录/Table of Contents|

[1]庞〓磊,,吕良海,等.密闭空间燃气泄漏爆炸危险区域迁移规律[J].中国安全生产科学技术,2012,8(8):47.
　PANG Lei,LV Liang hai,et al.Migration laws of hazardous zone for natural gas leakage explosion in enclosed spaces[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2012,8(8):47.
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密闭空间燃气泄漏爆炸危险区域迁移规律
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
8
期数:
2012年8期
页码:
47
栏目:
学术论著
出版日期:
2012-08-31

文章信息/Info

Title:
Migration laws of hazardous zone for natural gas leakage explosion in enclosed spaces
作者:
庞〓磊1;  2; 吕良海1; 刘〓晨3; 马秋菊2; 程〓露4
（1.北京市劳动保护科学研究所，北京 100054) (2.北京理工大学 爆炸科学与技术国家重点实验室，北京 100081) (3.首都经济贸易大学安全与环境工程学院，北京 100070) (4.北京首安信息技术有限公司，北京 100085）
Author(s):
PANG Lei1;  2;  LV Lianghai1;  LIU Chen3;  MA Qiuju2;  CHENG Lu4
(1.Beijing Municipal Institute of Labour Protection，Beijing 100054，China) (2.State Key Laboratory of Explosion Science and Technology，Beijing Institute of Technology，Beijing 100081，China) (3.School of Safety & Environment Engineering，Capital University
关键词:
燃气; 泄漏; 爆炸极限; 扩散
Keywords:
natural gas; leakage; explosion limit; diffusion
分类号:
X965
DOI:
-
文献标志码:
A
摘要:
为了给室内燃气泄漏爆炸事故的预防和事故后果评价提供理论依据，借助计算流体力学技术，对密闭空间内燃气泄漏扩散的非稳态流场进行了数值模拟，着重考察了燃气爆炸危险区域随时间和空间的分布特征。研究结果表明，在泄漏初始阶段，爆炸危险区域位于泄漏源上部。随着泄漏和扩散的持续发展，爆炸危险区域整体下移，最终迁移至地面附近。爆炸危险区域范围随时间由小变大，再由大变小。爆炸危险区域在房间下部的持续时间明显长于房间中上部。
Abstract:
In order to provide the theoretical basis to prevention and consequence assessment of natural gas leakage and explosion accident, the unsteady flow field of natural gas leakage and diffusion in an enclosed space was numerically simulated by computational fluid dynamics technology. The distribution characteristics of hazardous zone of natural gas leakage and explosion versus time and space were emphatically studied. The study results showed that the hazardous zone is located above the leakage source in initial leakage stage. Along with the continual development of the leakage and diffusion, the hazardous zone shifts down wholly and finally moves near ground. The area of the hazardous zone versus time is from small to large, and then from large to small. Duration time of the hazardous zone on the lower part of the room is obviously longer than that on the middle and upper parts of the room.

参考文献/References:

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备注/Memo

备注/Memo:
国家科技支撑计划项目（编号：2011BAK01B00）；国家自然科学基金项目（编号：11072035）
更新日期/Last Update: 2012-10-16