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Numerical Simulation Study on the Influence of Laneway Corner during the Gas Explosion

HUA Shuai,LIANG Jin-yan,WANG Li-xia,MEI Fu-ding(Faculty of Engineering,China University of Geosciences,Wuhan 430074,China)  
On the basis of some hypotheses,fluid dynamics software Fluent is used to simulate the numerical performance of a two-dimensional pipe at different truing angles,fulfilled with gas at a concentration of 9.5%.Then the speed of flame propagation,pressure and temperature at different angles from the simulated gas explosion are collected,compared and analyzed.The study shows that the parameters such as the speed of shock wave,pressure and temperature are gradually increasing during the propagation.A complex flow field is produced at the truing,motivating the shock wave locally.The result reveals the nature of gas spread at the roadway corner and can provide theoretical basis for the measures of anti-explosion.
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