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	有害气体泄漏过程的数值模拟
	陈建国 ; 刘奕 ; 杨锐 ; CHEN Jianguo ; LIU Yi ; YANG Rui
	2010-07-15 ; 2010-07-15
会议名称	中国灾害防御协会风险分析专业委员会第二届年会论文集（一） ; 中国灾害防御协会风险分析专业委员会第二届年会 ; 中国四川成都 ; CNKI ; 中国灾害防御协会风险分析专业委员会
关键词	气体泄漏 井喷 数值模拟 计算流体力学 poisonous gas leakage blowout numerical simulation computational fluid dynamics X928
其他题名	Numerical Study of Poisonous Gas Leakage Process
中文摘要	有毒有害气体发生泄漏后,气体通过大气对流和自身扩散作用,迅速向周围蔓延,如果缺乏对有害气体迁移和输运规律的把握,很可能导致人员疏散延误,盲目疏散等现象;在对危险源的风险管理及风险分析中,同样需要在考虑环境、地形等多种因素影响下摆脱人为主观判断,对危险气体波及范围进行准确预测,因此对有毒有害气体迁移和输运规律的研究显得尤为重要．本文利用计算流体力学方法(CFD)求解N-S方程,对泄漏发生后的流场内的有害气体组分流动进行了研究．通过对数值结果和实验结果的比较,验证了本文数值方法的可靠性,在此基础上,对开县天然气井喷过程进行了数值模拟,模拟结果和当时现场的定性和部分定量结果进行比较,得到较为一致的结论．; During the poisonous gas leakage accident, dispersed gases would spread quickly by fluid convection and diffusion mechanisms. The uncontrolled poisonous gas would greatly menace the life of human beings and properties. In some recent gas leakage accidents, it was found that poor understanding and estimating of the poisonous gas movement and transportation lead to evacuation delay and blindness evacuation of people. Accordingly the investigation on the law of toxic gas movement and transportation was especially crucial. In this paper,computational fluid dynamics method based on solving of Navier-Stokes equations was used. Concern was given on the movement of poisonous gas species. The numerical method was first proved by comparison of numerical results and experimental results. The KaiXian natural gas dispersion incident was taken as an example and numerical simulation work was performed. Numerical results gave the detailed process of the gas spread in the mountain area and the laws of heavy gas transportation are discussed. Comparison of numerical results and the real data with some qualitative was given and the simulation is satisfactorily proved.; 清华大学基础研究基金资助项目(No．JCqn2005028)
语种	中文 ; 中文
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/66726]
专题	清华大学
推荐引用方式 GB/T 7714	陈建国,刘奕,杨锐,等. 有害气体泄漏过程的数值模拟[C]. 见:中国灾害防御协会风险分析专业委员会第二届年会论文集（一）, 中国灾害防御协会风险分析专业委员会第二届年会, 中国四川成都, CNKI, 中国灾害防御协会风险分析专业委员会.

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