[1]段 佳,崔东明,董 刚.甲烷-空气预混气体泄爆过程的数值模拟与实验验证[J].南京理工大学学报(自然科学版),2006,(01):26-29.
 DUAN Jia~,CUI Dong-Ming~,DONG Gang~.Numerical Simulation and Experimental Validation of Methane-Air Mixture Explosion Venting[J].Journal of Nanjing University of Science and Technology,2006,(01):26-29.
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甲烷-空气预混气体泄爆过程的数值模拟与实验验证
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2006年01期
页码:
26-29
栏目:
出版日期:
2006-02-28

文章信息/Info

Title:
Numerical Simulation and Experimental Validation of Methane-Air Mixture Explosion Venting
作者:
段 佳1 崔东明2 董 刚2
1. 上海交通大学机械与动力工程学院, 上海200240; 2. 南京理工大学动力工程学院, 江苏南京210094
Author(s):
DUAN Jia~1CUI Dong-Ming~2DONG Gang~2
1.College of Mechanical and Power Engineering,Shanghai Jiaotong University,Shanghai 200240,China;2.School of Power Engineering,NUST,Nanjing 210094,China
关键词:
泄爆 基元反应 数值模拟 实验验证
Keywords:
explosion venting element chemical reaction numerical simulation experimental validation
分类号:
O 389; X 932
摘要:
通过求解带化学反应的Euler方程,对甲烷-空气预混气体泄爆过程进行了数值模拟。采用分裂格式处理方程,其中采用二阶TVD格式求解流场,采用基于Gear算法的微分方程解法器求解化学反应过程。计算结果显示在外流场中出现了破膜激波和第二道激波。破膜激波逐渐衰退,第二道激波经历了由增强到衰退的过程。计算结果与实验结果在定性上是一致的。
Abstract:
A methane-air mixture explosion venting process is numerically investigated in terms of Euler equations coupled with the element chemical reactions. A splitting operator method was used to treat separately the hydrodynamic process and the chemical process in the explosion venting simulat ion. The TVD scheme was used to capture the shock wave and the Gear algorithm was used to solve the chemical reactions. The computational results show that there exists a rupture shock wave and a secondary explosion wave in the external flow field during venting.The value of the rupture shock wave declines gradually, and the value of the secondary explosion wave rises to the maximum and then declines.The computational results qualitatively agree with the experimental results.

参考文献/References:

[ 1] Tamanini F, Valiulis J V. Improved guidline for the sizing of vents in dust explosions [ J] . J Loss Prev Process Ind, 1996, 9( 1) : 105- 118.
[ 2] 胡俊, 浦以康, 万士昕, 等1 柱形容器开口泄爆过程 中压力发展特性的实验研究[ J] . 爆炸与冲击, 2001, 21( 1) : 47- 52.
[ 3] 崔东明, 叶经方, 杜志敏. 泄爆过程内外流场的压力测 量[ J] . 流体力学实验与测量, 2003, 17( 1) : 64- 67.
[ 4] Harrison A J, Eyre J A. / External Explosion0as a result of explosion venting[ J] . Combust Sci and Tech, 1987, 52: 91- 106.
[ 5] 董刚, 刘宏伟, 陈义良. 通用甲烷层流预混火焰半详 细化学动力学机理[ J] . 燃烧科学与技术, 2002, 8 ( 1) : 44- 48.

备注/Memo

备注/Memo:
作者简介: 段佳( 1974- ) , 湖南长沙人, 男, 博士生, 主要研究方向: 燃烧, E-mail: djcs2004@ sjtu. edu. cn; 通讯作者: 崔东明( 1955- ) , 男, 教授, 博士, 主要研究方向: 爆炸力学, E-mail: cuidm@mail. njust. edu. cn。
更新日期/Last Update: 2006-02-28