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给出了高密实含能颗粒床燃烧转爆轰现象的实验研究结果。根据实验观察到的现象,建立了描述燃烧转爆轰的两相流数学物理模型,并对模型中的某些本构关系作了改进。用MacCormack差分格式和自适应网格技术,对伴有强冲击波形成的物理过程进行了数值求解。数值预测的火焰传播、诱导爆轰长度和稳态爆轰速度与实验结果基本吻合,其结果与作者已发表的燃烧转爆轰的机理分析相一致[1]。
The experimental results of combustion detonation and detonation of high density energetic particle bed are given. Based on the observed phenomena, a mathematical model of two-phase flow describing combustion-to-detonation was established and some of the constitutive relations in the model were improved. Using MacCormack differential scheme and adaptive grid technique, the physical processes associated with the formation of strong shock waves are numerically solved. Numerical predictions of flame propagation, induced detonation length and steady-state detonation velocities are in good agreement with the experimental results. The results are consistent with the published mechanistic analysis of the combustion-detonation explosion [1].