论文部分内容阅读
本文利用传感器技术和光电探测技术在爆炸激波管中研究了气态的硝基甲烷的爆燃和爆轰特性。由测量结果发现：随着硝基甲烷和氧的气态混合物中硝基甲烷含量的增加其爆燃（或爆轰）压力和速度呈起伏性的增加，它明显不同于一般可爆炸性混合物的倒“Ｕ”形曲线。实验还发现，硝基甲烷和氧的气态混合物点火后形成的弱爆燃波在爆炸激波管端盖反射后可以引起很强的爆轰，在端盖处的压力可达４５ＭＰａ，这时形成的ＣＨＯ、ＯＨ等中间产物的激励辐射比入射波形成的中间产物激励辐射强十多倍。
In this paper, the detonation and detonation properties of gaseous nitromethane have been studied in explosion shock tube using sensor technology and photodetection technique. From the measurement results, it is found that as the nitromethane content in the gaseous mixture of nitromethane and oxygen increases, the pressure and the rate of detonation (or detonation) increase in an undulating manner, which is significantly different from that of a generally explosive mixture "Shaped curve. The experiment also found that the weak deflagration wave formed after ignition of the gaseous mixture of nitromethane and oxygen can cause a strong detonation after being reflected by the explosion shock tube end cap, and the pressure at the end cap can reach 45 MPa. At this moment, The excitation of intermediate products such as CHO and OH is more than ten times stronger than that of the intermediate product of incident wave.