[1]薛海强,田贯三,王国磊.障碍物对可燃气体泄漏扩散影响的数值模拟[J].山东建筑大学学报,2010,(04):374-378.
 XUE Hai-qiang,TIAN Guan-san,WANG Guo-lei.Numerical Simulation of Obstacle Influence on Leakage and Diffusion of Combustible Gas[J].Journal of Shandong jianzhu university,2010,(04):374-378.
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障碍物对可燃气体泄漏扩散影响的数值模拟()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2010年04期
页码:
374-378
栏目:
研究论文
出版日期:
2010-08-15

文章信息/Info

Title:
Numerical Simulation of Obstacle Influence on Leakage and Diffusion of Combustible Gas
作者:
薛海强 田贯三王国磊
(山东建筑大学  热能工程学院,山东 济南 250101)
Author(s):
XUE Hai-qiang TIAN Guan-sanWANG Guo-lei
(School of Thermal Energy Engineering, Shandong Jianzhu University, Jinan 250101, China)
关键词:
障碍物泄漏速率泄漏位置泄漏扩散数值模拟危险区域
Keywords:
obstacle leakage rate leakage position leakage and diffusion numerical simulation dangerous areas
分类号:
TU996
文献标志码:
A
摘要:
室内可燃气体泄漏容易引发危险事故,考虑障碍物对可燃气体泄漏扩散的影响,采用雷诺平均的N-S方程,  湍流模型方程以及组分输运模型方程,通过改变泄漏速率、泄漏位置等参数对障碍物影响下可燃气体泄漏扩散进行了数值模拟,结果表明:障碍物存在阻碍了可燃气体的泄漏扩散,易使泄漏气体堆积,增大危险事故发生的可能性;不同泄漏速率下得到的浓度场分布相似;泄漏位置不同得到的危险区域不同,泄漏口与出口异侧、位置越低、距离障碍物距离越小,房间内发生危险事故的可能性越大。模拟结果可为制定室内可燃气体危险事故的预防措施提供参考。
Abstract:
The leakage of indoor combustible gas always makes dangerous accident happen. Taking obstacle into account, the Reynolds averaged Navier-Stokes equation, the turbulence model equation and the species transport equation are used to numerically simulate leakage and diffusion of indoor combustible gas under the influence of obstacle by changing leakage rate and leakage position. The results show that the obstacle can block diffusion of combustible gas and make leakage gas easily accumulate to increase the occurrence of dangerous accident. The concentration fields of different rates are similar. The dangerous field of different leakage oppositions are different when the obstacle exists. When leakage hole is at opposite side with outlet, the occurrence of dangerous accident is easier to happen. As  the position of leakage hole is lower and the distance between leakage hole and obstacle is shorter. The simulation results can provide reference for preventing dangerous accident of indoor combustible gas.
更新日期/Last Update: 2010-09-19