IMECH-IR  > 力学所知识产出(1956-2008)
Transition Between Detonation and Deflagration in a Tube with a Cavity
Hu ZM(胡宗民); Liu CL; Zhang DL(张德良); Jiang ZL(姜宗林)
Source PublicationShock Waves, Vols 1 and 2, Proceedings of the 24th International Symposium on Shock Waves, 2004 Beijing, p.831-836, Published: 2005
2004-07-11
Conference Name24th International Symposium on Shock Waves, JUL 11-16, 2004 Beijing, PEOPLES R CHINA
AbstractIn this paper, the transition of a detonation from deflagration was investigated numerically while a detonation wave propagates in a tube with a sudden change in cross section, referred to as the expansion cavity. The dispersion-controlled scheme was adopted to solve Euler equations of axis-symmetric flows implemented with detailed chemical reaction kinetics of hydrogen-oxygen (or hydrogen-air) mixture. The fractional step method was applied to treat the stiff problems of chemical reaction flow. It is observed that phenomena of detonation quenching and reigniting appear when the planar detonation front diffracts at the vertex of the expansion cavity entrance. Numerical results show that detonation front in mixture of higher sensitivity keeps its substantial coupled structure when it propagates into the expansion cavity. However, the leading shock wave decouples with the combustion zone if mixture of lower sensitivity was set as the initial gas.
WOS IDWOS:000231243300125
Indexed ByCPCI-S
Language英语
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Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/13943
Collection力学所知识产出(1956-2008)
Corresponding AuthorZhang DL(张德良)
Recommended Citation
GB/T 7714
Hu ZM,Liu CL,Zhang DL,et al. Transition Between Detonation and Deflagration in a Tube with a Cavity[C]Shock Waves, Vols 1 and 2, Proceedings of the 24th International Symposium on Shock Waves, 2004 Beijing, p.831-836, Published: 2005,2004.
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