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可燃气体混合物燃烧转爆轰判据对比分析

DOI: 10.11858/gywlxb.2013.03.011, PP. 385-390

Keywords: 气相爆轰波,燃烧转爆轰,到爆轰距离,到爆轰时间

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Abstract:

基于气相爆轰实验中到爆轰时刻不同判据之间的比较,利用数字高速摄影相机,在激波管中开展化学计量比的乙炔-氧气混合气体的燃烧转爆轰实验,对比了6种不同的判据判读到爆轰时刻数据之间的差异。对比分析表明,采用波阵面火焰发光强度和波阵面轨迹作为乙炔-氧气混合气体到爆轰时刻的判据,能够更精确地获得到爆轰时间和到爆轰距离。不同判读数据之间的差异较大,主要原因是在燃烧转爆轰过程中发生局部爆炸,对压力和波速的走时产生较大的影响,导致了判读到爆轰时刻的误差。

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