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A detonation paradox: Why inviscid detonation simulations predict the incorrect trend for the role of instability in gaseous cellular detonations?
Combustion and Flame ( IF 5.8 ) Pub Date : 2018-09-01 , DOI: 10.1016/j.combustflame.2018.05.002
Matei I. Radulescu

Abstract Experiments conducted over the past several decades have shown that the cellular structure of detonations is responsible for enhancing the detonability of gaseous detonations in the presence of losses, as compared with that predicted by the classical Zel’dovich-Von Neuman-Doring model for detonations, which neglects the time varying cellular structure of the front. Paradoxically, numerical studies conducted over the past decade have revealed that the propagation of inviscid detonations was hampered if the detonation was allowed to have a cellular structure, the effect increasing with the cellular irregularity. This apparent paradox is discussed in relation to the burning mechanism of unstable cellular detonations established experimentally, which shows that diffusive effects control the reaction of approximately half of the gases passing across the detonation front in unstable cellular detonations.

中文翻译:

爆炸悖论:为什么无粘性爆炸模拟预测不稳定性在气态细胞爆炸中的作用的错误趋势?

摘要 过去几十年进行的实验表明,与经典的 Zel'dovich-Von Neuman-Doring 爆炸模型预测的结果相比,爆炸的细胞结构在有损失的情况下增强了气态爆炸的爆炸性。 ,忽略了前部的时变细胞结构。矛盾的是,过去十年进行的数值研究表明,如果允许爆炸具有细胞结构,则无粘性爆炸的传播会受到阻碍,这种影响随着细胞的不规则性而增加。这个明显的悖论与实验建立的不稳定细胞爆炸的燃烧机制有关,
更新日期:2018-09-01
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