CFD numerical simulation of dispersion law of indoor gas leakage based on weather conditions

来源期刊：中南大学学报(英文版)2009年第z1期

论文作者：张甫仁 张辉 庄春龙

文章页码：62 - 67

Key words：gas leak； numerical simulation； leakage law

Abstract: 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.