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通过Fluent软件分别在球形容器接2m单管(0°直管、45°单管、90°单管)和分流管(90°侧向三通管、45°三通管、90°正向三通管)的密闭容器内进行甲烷/空气燃烧爆炸数值模拟,得到了拐角结构对最大爆炸压力和火焰阵面的影响.模拟结果表明球形容器接单管时,拐角效应明显.90°单管的最大爆炸压力响应时间比0°直管和45°单管早;在45°单管和90°单管在拐角处存在明显的火焰跃进现象.球形容器接分流管时,拐角效应减弱.最大爆炸压力均小于球形容器接单管的最大爆炸压力,爆炸压力震荡现象要比球形容器接单管明显.管道后半段均出现火焰阵面的不稳定现象,球形容器接单管比球形容器接分流管发生火焰阵面不稳定现象要早.
Fluent software was used to connect 2m single tube (0 ° straight tube, 45 ° single tube, 90 ° single tube) and shunt tube (90 ° lateral tee, 45 ° tee, 90 ° forward three The effect of the corner structure on the maximum explosion pressure and the flame front was obtained.The simulation results show that the spherical effect is obvious when the spherical container is connected to a single tube.At 90 ° single-tube The maximum explosion pressure response time is earlier than 0 ° straight tube and 45 ° single tube, and there is a clear flame jump phenomenon at the corner between 45 ° single tube and 90 ° single tube.When the spherical container is connected to the shunt tube, the corner effect is weakened. The pressure is less than the maximum explosion pressure of the spherical vessel connected to a single tube, the phenomenon of explosive pressure shock than the spherical container connected to a single tube obvious .Flower side of the flame are unstable, the spherical container connected to the spherical container than the diversion Tube flame instability occurs early.