Abstract

A VISAR multipoint laser interferometer is used to study a detonation wave structure in mixtures of tetranitromethane with methanol and nitrobenzene. A poor reproducibility of particle velocity profiles is observed in different experiments with a fixed composition of mixtures. As shown by simultaneous recording of wave profiles at several points of the detonation front and different cross sections of the sample, the flow is one-dimensional and stable with respect to longitudinal perturbations. This means that steady detonation is observed in each experiment, and its parameters differ from shot to shot. Aside from the lack of reproducibility of particle velocity profiles, nonclassical detonation is recorded in the mixtures under study, which is observed as the absence of a von Neumann spike in a reaction zone. A possible relationship between these two phenomena is discussed.

中文翻译：

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四硝基甲烷与甲醇和硝基苯的混合物爆轰参数的重现性

摘要

VISAR 多点激光干涉仪用于研究四硝基甲烷、甲醇和硝基苯混合物中的爆震波结构。在具有固定混合物组成的不同实验中观察到粒子速度分布的重现性很差。正如在爆轰前沿的几个点和样品的不同横截面同时记录波形图所示，流动是一维的，并且相对于纵向扰动是稳定的。这意味着在每个实验中都观察到稳定的爆炸，其参数因炮弹而异。除了缺乏粒子速度分布的可重复性外，在研究的混合物中还记录了非经典爆炸，这是由于反应区中没有冯诺依曼尖峰而观察到的。