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CFD numerical simulation of dispersion law of indoor gas leakage based on weather conditions
  • ISSN号：1005-9784
  • 期刊名称：Journal of Central South University of Technology
  • 时间：0
  • 页码：62-67
  • 分类：TU834[建筑科学—供热、供燃气、通风及空调工程]
  • 作者机构：[1]School of Mechanical and Electrical Engineering,Chongqing Jiaotong University, [2]Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment,Ministry of Education,Chongqing University, [3]Department of Barracks’ Management and Environmental Engineering,PLA Logistic Engineering University
  • 相关基金：Projects(50704041, 50838009, 50678179) supported by the National Natural Science Foundation of China;Projects(2006BAJ02A09, 2006BAJ02A13-4) supported by the National Key Technologies R & D Program of China;Project(CSTC2008BB6347) supported by the Natural Science Foundation Project of Chongqing;Project(20080430752) supported by the Postdoctoral Science Foundation of China
  • 相关项目：建筑热环境动态调节与控制的理论与方法
作者： ZHANG Fu-ren|ZHANG Hui|ZHUANG Chun-long|
关键词： GAS, LEAK, NUMERICAL, simulation, LEAKAGE, LAW
中文摘要：

The calculation model was established by k-ε turbulence stress which reflects the change of indoor gas leak’s volume fraction,and the CFD software was used to numerically simulate the volume fraction of gas after the gas of continuity leakage,at the same time the changes of gas leak were studied. The results show that the process of gas leakage is different with the change of conditions of indoor and outdoor. Because of the different influencing factors,when the gas leak reaches a certain stable value,the volume fraction,velocity and the explosion of regional are different in the same state indoor. In some regions the gas will explode which meets the fire even if the mean volume fraction of the gas cannot achieve the explosion limit.

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