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为研究连通容器内气体爆炸规律,采用流体力学软件Fluent对球形连通容器内预混气体爆炸过程进行模拟,分析了不同管道长度和传爆方向条件下连通容器内压力和中心轴线上的速度变化。结果表明:随连接管长增加,连通容器内压力峰值更高,连通容器在压力稳定阶段保持的压力更小;较之小容器中心点火、大容器中心点火连通容器内压力迅速上升期及达到压力峰值的时间更迟,连通容器内的压力峰值更高,不同传爆方向时,传爆容器内的压力都先于起爆容器达到一个极值;火焰进入传爆容器后,轴线速度得到极大提高,最大值出现在管道内靠近传爆容器的接合处,可燃气体基本燃烧完时,连通容器轴线速度随连接管长增加下降更慢。
In order to study the regularity of gas explosion in a communicating vessel, the fluid dynamics software Fluent was used to simulate the premixed gas explosion in a spherical container. The pressure changes and the velocity in the central axis were analyzed under different pipe lengths and propagation directions. The results show that with the increase of connecting pipe length, the peak pressure in the communicating vessel is higher, and the pressure in the communicating vessel is smaller in the pressure stabilizing phase. Compared with the ignition in the small vessel center, the pressure in the vessel in the center of the ignition vessel rises rapidly and reaches the pressure The peak time is later, the peak pressure in the communicating vessel is higher, and the pressure in the explosion-propagating vessel reaches an extreme value before the explosion-propagating vessel in different propagation directions; the axial velocity is greatly increased after the flame enters the explosion-propagating vessel , The maximum appears in the pipeline close to the explosion-proof container junction, the basic combustion of combustible gas, connected to the container axial velocity increases with the connecting pipe length drops more slowly.