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arXiv 1804.00539physics.flu-dyn
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燃烧转爆轰的理论分析

Theoretical Analysis on Deflagration-to-Detonation Transition

Yun-Feng Liu, Huan Shen, De-Liang Zhang, Zong-Lin Jiang

摘要:

燃烧转爆轰(DDT)机理的研究对工业安全具有重要意义。然而,DDT的定量预测是迄今为止燃烧和爆轰理论中尚未解决的主要问题之一。本文从理论上对DDT过程进行了研究,给出了临界条件的简明理论表达式。结果表明,爆燃波以约60%的Chapman-Jouguet(C-J)爆速传播是临界条件。该速度是爆燃波的最大传播速度,几乎等于燃烧产物的声速。当达到这个临界浓度时,C-J爆轰立即被触发。这是滴滴涕进程的定量标准。

英文摘要:

The study on deflagration-to-detonation transition (DDT) is very important because this mechanism has relevance to safety issues in industries, where combustible premixed gases are in general use. However, the quantitative prediction of DDT is one of the major unsolved problems in combustion and detonation theory to date. In this paper, the DDT process is studied theoretically and the critical condition is given by a concise theoretical expression. The results show that a deflagration wave propagating with about 60% Chapman-Jouguet (C-J) detonation velocity is a critical condition. This velocity is the maximum propagating velocity of a deflagration wave and almost equal to the sound speed of combustion products. When this critical conation is reached, a C-J detonation is triggered immediately. This is the quantitative criteria of the DDT process.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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