球形连通容器预混气体爆炸研究

Study on explosion of premixed gas in linked spherical vessels

采用试验和数值模拟相结合的方法,对球形连通容器内甲烷-空气预混气体爆炸过程中不同点火位置的爆炸压力、流场变化和火焰传播行为进行分析。试验和数值分析表明:传爆容器在湍流和喷射火焰的作用下将发生剧烈的二次爆炸,特别是当传爆容器为小容器时爆炸压力高、危险性更大;传爆容器爆炸产生的反流增加了起爆容器的湍流程度,导致起爆容器爆炸压力的进一步增加。

A study included experimental investigation and numerical simulation was done to the methane and air explosion in linked vessels. The mechanism of gas explosion strength and characteristics of flame and pressure transmission in linked vessels affected by ignition spot was revealed. The result suggested that the small vessel could be more dangerous than the large one in the explosion. It needs to pay more attention to protect the small vessel. Meanwhile the pipe which connected the vessels had great effect on the development of turbulent flow and jet fire